Thank you for visiting the Windows Internet Explorer Testing Center!

In conjunction with the Beta 2 release of Internet Explorer 8, we are posting the set of tests we are using to validate our interpretation and implementation of the CSS 2.1 specification. We are doing this so we can get some feedback from you, the web designers and developers, on the tests we have submitted to the W3C for inclusion into the W3C's CSS Working Group Test Suite.

We know how challenging it can be to build one site that works in every browser and we know it is just getting harder as the technology advances and customer expectations rise. The Internet Explorer team is committed to making it easier for you to build the web in a standardized way. Because there are ambiguities, options, and misinterpretations in any specification, we have created these tests to verify our current implementation of the CSS 2.1 specification in IE8 Beta 2. We welcome and desire your feedback on the tests prior to these becoming official tests in the CSS suite. Please post any corrections or additions you may have to the tests in the W3C's CSS test suite mailing list.

In addition to the CSS cases, we also submitted some tests to the WAI – ARIA working group as well. They’re actively working on creating a more accessible web for people that need assistive technologies to improve their web experience. Our first submissions are here

Thank you,


Jason Upton
Test Manager, Internet Explorer

CSS 2.1 Test Pages

(Copyright Information)

NOTE: In order to correctly run the CSS test cases, you must install the Ahem font on your system.

• Chapter 4
  • Rules
    • Parsing of invalid @rules
    • Parsing of invalid @rules with blocks
    • @import inside block
    • @import following @charset
    • @import following valid statements
    • @import following an invalid statement
    • @import following a bad @rule
    • @import after a bad selector and rule block
    • @rules and whitespace
    • Parsing of bad selectors
    • Parsing nested blocks and strings in style blocks
    • Empty declaration block
    • Rule blocks and whitespace
    • Parsing square bracket blocks
    • Parsing curly bracket blocks
    • Parsing parentheses blocks
    • Parsing blocks and strings in style blocks
    • Case insensitivity within selectors, properties and values
    • Case sensitive html attributes
    • Character representation in other encoding
    • Parsing rgb color values with whitespace
    • Parsing invalid hexadecimal rbg units - whitespace in hex
    • Parsing invalid RGB functional notation - two values
    • Parsing invalid RGB functional notation - Percentages and Numbers
    • Clipping of RGB color values
    • Comparing color keywords
    • Parsing comments within style tag
    • Nested comments
    • Parsing of comments
    • HTML comments and CSS comments
    • Parsing counter functions with just the identifier
    • Parsing invalid counter functions - Too many arguments
    • Parsing whitespace in style declaration
    • Parsing unexpected end of declaration block
    • Parsing unexpected end of function
    • Parsing unexpected end of @media block
    • Parsing unexpected end of shorthand rule
    • Parsing escaped identifiers as selectors, property and value
    • Parsing escaped special CSS characters
    • Parsing escaped newlines within identifiers
    • Parsing escaped chars in the range of 0-9a-f
    • Parsing escaped characters as selector and property
    • Parsing escaped identifiers with spaces
    • Termination of escaped character sequences with whitespace
    • Termination of escaped character sequences with six digits
    • Termination of escaped character sequences with six digits and whitespace
    • Termination of escaped character sequences with less than 6 digits and whitespace
    • Termination of escaped character sequences with two digits terminated by whitespace
    • Termination of escaped character sequences with less than six digits terminated by line feeds and tabs
    • Parsing HTML comments
    • Selector attributes and hyphens
    • Attribute selectors and underscores
    • Attribute selectors with hyphens and underscores
    • Attribute selects with digits
    • Attribute selectors starting with hyphens and digits
    • Parsing invalid rules
    • Parsing invalid values
    • Parser error handling with invalid at-rules: @ invalid selector invalidates entire block
    • Parsing invalid declarations in at-rules
    • Parsing malformed rules: Property with no value and no ending semicolon
    • Parsing malformed rules: Property with no value assigned
    • Parsing malformed rules: No value and no semi-colon
    • Parsing malformed rules: No value with property
    • Parsing malformed rules: Semi-colon before property
    • Parsing malformed rules: Valid rule after malformed rule
    • Parsing malformed rules: Double colon seperating property and value
    • Parsing malformed rules: Missing property
    • Parsing invalid numbers - alphanumeric characters
    • Parsing decimal values - decimal with multiple decimal digits
    • Parsing invalid decimal values - alphanumeric characters within number
    • Parsing integer numbers with '+'
    • Optional unit identifier after 0
    • Unsupported negative values
    • Em sizes
    • Em size with font-size set to x-large
    • Em size with the font-size set to px size
    • Em size with font-size set to inch
    • Em size with font-size set to em
    • Em size with font-size set to ex
    • Em size with font-size set to percentage
    • Em size with font-size set to 'larger'
    • Parsing invalid percentage values - decimal value with multiple decimals
    • Parsing of percentage values - 0%
    • Ex unit font definition
    • Em size with the root element
    • Parsing signed integers
    • Parsing single quoted property keywords
    • Parsing double quoted value keywords
    • Parsing of escaped single quotes
    • Parsing of escaped double quotes
    • Parsing of escaped quotes (single within single)
    • Error handling of unterminated strings
    • Parsing valid URIs with whitespace and no quotes
    • Parsing URL with an invalid space
    • URL with missing closing parenthesis
    • Invalid chars in URL tokens
    • URL with escaped special chars - single quote
    • URL with URI that has escaped special chars
    • Whitespace - em-space (U+2003)
    • Whitespace - ideographic space (U+3000)
• Chapter 5
  • Rules
    • ID selector without value
    • Attribute selector matching value
    • Attribute selector matching value in hypenated list
    • Attribute selector matching value in list
    • Numeric attributes
    • Case sensitivity of attributes and attribute values in HTML 4.01
    • Multiple and repeating attributes
    • After and before pseudo-elements
    • First-letter pseudo-element with :before pseudo-element
    • Child selector
    • Class selectors
    • Invalid class selectors
    • Multiple class selectors
    • Descendant Combinators and newlines
    • Sibling Combinators and spaces
    • Sibling combinators and newlines
    • Descendant Combinators and spaces
    • Descendent selector
    • Grandchild selector
    • Descendent selector with ID attribute
    • Descendent selector and tabs
    • Descendent selector and newlines
    • First-child pseudo-class
    • First-child pseudo-class with text node
    • First-letter with the 'right parenthesis' punctuation character
    • First-letter with the 'right square bracket' punctuation character
    • First-letter with the 'right curly bracket' punctuation character
    • First-letter with the 'tibetan mark gug rtags gyas' punctuation character
    • First-letter with the 'tibetan mark ang khang gyas' punctuation character
    • First-letter with the 'ogham reversed feather mark' punctuation character
    • First-letter with the 'right square bracket with quill' punctuation character
    • First-letter with the 'superscript right parenthesis' punctuation character
    • First-letter with the 'subscript right parenthesis' punctuation character
    • First-letter with the 'right-pointing angle bracket' punctuation character
    • First-letter with the 'bottom square bracket' punctuation character
    • First-letter with the 'medium right parenthesis ornament' punctuation character
    • First-letter with the 'medium flattened right parenthesis ornament' punctuation character
    • First-letter with the 'medium right-pointing angle bracket ornament' punctuation character
    • First-letter with the 'heavy right-pointing angle quotation mark ornament' punctuation character
    • First-letter with the 'heavy right-pointing angle bracket ornament' punctuation character
    • First-letter with the 'light right tortoise shell bracket ornament' punctuation character
    • First-letter with the 'medium right curly bracket ornament' punctuation character
    • First-letter with the 'right s-shaped bag delimiter' punctuation character
    • First-letter with the 'mathematical right white square bracket' punctuation character
    • First-letter with the 'mathematical right angle bracket' punctuation character
    • First-letter with the 'mathematical right double angle bracket' punctuation character
    • First-letter with the 'right white curly bracket' punctuation character
    • First-letter with the 'right white parenthesis' punctuation character
    • First-letter with the 'z notation right image bracket' punctuation character
    • First-letter with the 'z notation right binding bracket' punctuation character
    • First-letter with the 'right square bracket with underbar' punctuation character
    • First-letter with the 'right square bracket with tick in bottom corner' punctuation character
    • First-letter with the 'right square bracket with tick in top corner' punctuation character
    • First-letter with the 'right angle bracket with dot' punctuation character
    • First-letter with the 'right arc greater-than bracket' punctuation character
    • First-letter with the 'double right arc less-than bracket' punctuation character
    • First-letter with the 'right black tortoise shell bracket' punctuation character
    • First-letter with the 'right wiggly fence' punctuation character
    • First-letter with the 'right double wiggly fence' punctuation character
    • First-letter with the 'right-pointing curved angle bracket' punctuation character
    • First-letter with the 'right angle bracket' punctuation character
    • First-letter with the 'right double angle bracket' punctuation character
    • First-letter with the 'right corner bracket' punctuation character
    • First-letter with the 'right white corner bracket' punctuation character
    • First-letter with the 'right black lenticular bracket' punctuation character
    • First-letter with the 'right tortoise shell bracket' punctuation character
    • First-letter with the 'right white lenticular bracket' punctuation character
    • First-letter with the 'right white tortoise shell bracket' punctuation character
    • First-letter with the 'right white square bracket' punctuation character
    • First-letter with the 'double prime quotation mark' punctuation character
    • First-letter with the 'low double prime quotation mark' punctuation character
    • First-letter with the 'ornate right parenthesis' punctuation character
    • First-letter with the 'presentation form for vertical right white lenticular bracket' punctuation character
    • First-letter with the 'presentation form for vertical right parenthesis' punctuation character
    • First-letter with the 'presentation form for vertical right curly bracket' punctuation character
    • First-letter with the 'presentation form for vertical right tortoise shell bracket' punctuation character
    • First-letter with the 'presentation form for vertical right black lenticular bracket' punctuation character
    • First-letter with the 'presentation form for vertical right double angle bracket' punctuation character
    • First-letter with the 'presentation form for vertical right angle bracket' punctuation character
    • First-letter with the 'presentation form for vertical right corner bracket' punctuation character
    • First-letter with the 'presentation form for vertical right white corner bracket' punctuation character
    • First-letter with the 'presentation form for vertical right square bracket' punctuation character
    • First-letter with the 'small right parenthesis' punctuation character
    • First-letter with the 'small right curly bracket' punctuation character
    • First-letter with the 'small right tortoise shell bracket' punctuation character
    • First-letter with the 'fullwidth right parenthesis' punctuation character
    • First-letter with the 'fullwidth right square bracket' punctuation character
    • First-letter with the 'fullwidth right curly bracket' punctuation character
    • First-letter with the 'fullwidth right white parenthesis' punctuation character
    • First-letter with the 'halfwidth right corner bracket' punctuation character
    • First-letter with the 'right-pointing double angle quotation mark' punctuation character
    • First-letter with the 'right single quotation mark' punctuation character
    • First-letter with the 'right double quotation mark' punctuation character
    • First-letter with the 'single right-pointing angle quotation mark' punctuation character
    • First-letter with the 'right substitution bracket' punctuation character
    • First-letter with the 'right dotted substitution bracket' punctuation character
    • First-letter with the 'right transposition bracket' punctuation character
    • First-letter with the 'right raised omission bracket' punctuation character
    • First-letter with the 'right low paraphrase bracket' punctuation character
    • First-letter with the 'left-pointing double angle quotation mark' punctuation character
    • First-letter with the 'left single quotation mark' punctuation character
    • First-letter with the 'single high-reversed-9 quotation mark' punctuation character
    • First-letter with the 'left double quotation mark' punctuation character
    • First-letter with the 'double high-reversed-9 quotation mark' punctuation character
    • First-letter with the 'single left-pointing angle quotation mark' punctuation character
    • First-letter with the 'left substitution bracket' punctuation character
    • First-letter with the 'left dotted substitution bracket' punctuation character
    • First-letter with the 'left transposition bracket' punctuation character
    • First-letter with the 'left raised omission bracket' punctuation character
    • First-letter with the 'left low paraphrase bracket' punctuation character
    • First-letter with the 'exclamation mark' punctuation character
    • First-letter with the 'quotation mark' punctuation character
    • First-letter with the 'number sign' punctuation character
    • First-letter with the 'percent sign' punctuation character
    • First-letter with the 'ampersand' punctuation character
    • First-letter with the 'apostrophe' punctuation character
    • First-letter with the 'asterisk' punctuation character
    • First-letter with the 'comma' punctuation character
    • First-letter with the 'full stop' punctuation character
    • First-letter with the 'solidus' punctuation character
    • First-letter with the 'colon' punctuation character
    • First-letter with the 'semicolon' punctuation character
    • First-letter with the 'question mark' punctuation character
    • First-letter with the 'commercial at' punctuation character
    • First-letter with the 'thai character khomut' punctuation character
    • First-letter with the 'tibetan mark initial yig mgo mdun ma' punctuation character
    • First-letter with the 'tibetan mark closing yig mgo sgab ma' punctuation character
    • First-letter with the 'tibetan mark caret yig mgo phur shad ma' punctuation character
    • First-letter with the 'tibetan mark yig mgo tsheg shad ma' punctuation character
    • First-letter with the 'tibetan mark sbrul shad' punctuation character
    • First-letter with the 'tibetan mark bskur yig mgo' punctuation character
    • First-letter with the 'tibetan mark bka- shog yig mgo' punctuation character
    • First-letter with the 'tibetan mark intersyllabic tsheg' punctuation character
    • First-letter with the 'tibetan mark delimiter tsheg bstar' punctuation character
    • First-letter with the 'tibetan mark shad' punctuation character
    • First-letter with the 'tibetan mark nyis shad' punctuation character
    • First-letter with the 'tibetan mark tsheg shad' punctuation character
    • First-letter with the 'tibetan mark nyis tsheg shad' punctuation character
    • First-letter with the 'tibetan mark rin chen spungs shad' punctuation character
    • First-letter with the 'tibetan mark rgya gram shad' punctuation character
    • First-letter with the 'tibetan mark paluta' punctuation character
    • First-letter with the 'tibetan mark bska- shog gi mgo rgyan' punctuation character
    • First-letter with the 'tibetan mark mnyam yig gi mgo rgyan' punctuation character
    • First-letter with the 'myanmar sign little section' punctuation character
    • First-letter with the 'myanmar sign section' punctuation character
    • First-letter with the 'myanmar symbol locative' punctuation character
    • First-letter with the 'myanmar symbol completed' punctuation character
    • First-letter with the 'myanmar symbol aforementioned' punctuation character
    • First-letter with the 'myanmar symbol genitive' punctuation character
    • First-letter with the 'georgian paragraph separator' punctuation character
    • First-letter with the 'ethiopic wordspace' punctuation character
    • First-letter with the 'ethiopic full stop' punctuation character
    • First-letter with the 'ethiopic comma' punctuation character
    • First-letter with the 'ethiopic semicolon' punctuation character
    • First-letter with the 'ethiopic colon' punctuation character
    • First-letter with the 'ethiopic preface colon' punctuation character
    • First-letter with the 'ethiopic question mark' punctuation character
    • First-letter with the 'ethiopic paragraph separator' punctuation character
    • First-letter with the 'canadian syllabics chi sign' punctuation character
    • First-letter with the 'canadian syllabics full stop' punctuation character
    • First-letter with the 'runic single punctuation' punctuation character
    • First-letter with the 'runic multiple punctuation' punctuation character
    • First-letter with the 'runic cross punctuation' punctuation character
    • First-letter with the 'philippine single punctuation' punctuation character
    • First-letter with the 'philippine double punctuation' punctuation character
    • First-letter with the 'khmer sign khan' punctuation character
    • First-letter with the 'khmer sign bariyoosan' punctuation character
    • First-letter with the 'khmer sign camnuc pii kuuh' punctuation character
    • First-letter with the 'khmer sign beyyal' punctuation character
    • First-letter with the 'khmer sign phnaek muan' punctuation character
    • First-letter with the 'khmer sign koomuut' punctuation character
    • First-letter with the 'mongolian birga' punctuation character
    • First-letter with the 'mongolian ellipsis' punctuation character
    • First-letter with the 'mongolian comma' punctuation character
    • First-letter with the 'mongolian full stop' punctuation character
    • First-letter with the 'mongolian colon' punctuation character
    • First-letter with the 'mongolian four dots' punctuation character
    • First-letter with the 'mongolian sibe syllable boundary marker' punctuation character
    • First-letter with the 'mongolian manchu comma' punctuation character
    • First-letter with the 'mongolian manchu full stop' punctuation character
    • First-letter with the 'mongolian nirugu' punctuation character
    • First-letter with the 'limbu exclamation mark' punctuation character
    • First-letter with the 'limbu question mark' punctuation character
    • First-letter with the 'new tai lue sign lae' punctuation character
    • First-letter with the 'new tai lue sign laev' punctuation character
    • First-letter with the 'buginese pallawa' punctuation character
    • First-letter with the 'buginese end of section' punctuation character
    • First-letter with the 'double vertical line' punctuation character
    • First-letter with the 'double low line' punctuation character
    • First-letter with the 'dagger' punctuation character
    • First-letter with the 'double dagger' punctuation character
    • First-letter with the 'bullet' punctuation character
    • First-letter with the 'triangular bullet' punctuation character
    • First-letter with the 'one dot leader' punctuation character
    • First-letter with the 'two dot leader' punctuation character
    • First-letter with the 'horizontal ellipsis' punctuation character
    • First-letter with the 'hyphenation point' punctuation character
    • First-letter with the 'per mille sign' punctuation character
    • First-letter with the 'per ten thousand sign' punctuation character
    • First-letter with the 'prime' punctuation character
    • First-letter with the 'double prime' punctuation character
    • First-letter with the 'triple prime' punctuation character
    • First-letter with the 'reversed prime' punctuation character
    • First-letter with the 'reversed double prime' punctuation character
    • First-letter with the 'reversed triple prime' punctuation character
    • First-letter with the 'caret' punctuation character
    • First-letter with the 'reference mark' punctuation character
    • First-letter with the 'double exclamation mark' punctuation character
    • First-letter with the 'interrobang' punctuation character
    • First-letter with the 'overline' punctuation character
    • First-letter with the 'caret insertion point' punctuation character
    • First-letter with the 'asterism' punctuation character
    • First-letter with the 'hyphen bullet' punctuation character
    • First-letter with the 'double question mark' punctuation character
    • First-letter with the 'question exclamation mark' punctuation character
    • First-letter with the 'exclamation question mark' punctuation character
    • First-letter with the 'tironian sign et' punctuation character
    • First-letter with the 'reversed pilcrow sign' punctuation character
    • First-letter with the 'black leftwards bullet' punctuation character
    • First-letter with the 'black rightwards bullet' punctuation character
    • First-letter with the 'low asterisk' punctuation character
    • First-letter with the 'reversed semicolon' punctuation character
    • First-letter with the 'close up' punctuation character
    • First-letter with the 'two asterisks aligned vertically' punctuation character
    • First-letter with the 'swung dash' punctuation character
    • First-letter with the 'flower punctuation mark' punctuation character
    • First-letter with the 'three dot punctuation' punctuation character
    • First-letter with the 'quadruple prime' punctuation character
    • First-letter with the 'four dot punctuation' punctuation character
    • First-letter with the 'five dot punctuation' punctuation character
    • First-letter with the 'two dot punctuation' punctuation character
    • First-letter with the 'four dot mark' punctuation character
    • First-letter with the 'dotted cross' punctuation character
    • First-letter with the 'tricolon' punctuation character
    • First-letter with the 'vertical four dots' punctuation character
    • First-letter with the 'bottom square bracket over top square bracket' punctuation character
    • First-letter with the 'coptic old nubian full stop' punctuation character
    • First-letter with the 'coptic old nubian direct question mark' punctuation character
    • First-letter with the 'coptic old nubian indirect question mark' punctuation character
    • First-letter with the 'coptic old nubian verse divider' punctuation character
    • First-letter with the 'coptic full stop' punctuation character
    • First-letter with the 'coptic morphological divider' punctuation character
    • First-letter with the 'right angle substitution marker' punctuation character
    • First-letter with the 'right angle dotted substitution marker' punctuation character
    • First-letter with the 'raised interpolation marker' punctuation character
    • First-letter with the 'raised dotted interpolation marker' punctuation character
    • First-letter with the 'dotted transposition marker' punctuation character
    • First-letter with the 'raised square' punctuation character
    • First-letter with the 'editorial coronis' punctuation character
    • First-letter with the 'paragraphos' punctuation character
    • First-letter with the 'forked paragraphos' punctuation character
    • First-letter with the 'reversed forked paragraphos' punctuation character
    • First-letter with the 'hypodiastole' punctuation character
    • First-letter with the 'dotted obelos' punctuation character
    • First-letter with the 'downwards ancora' punctuation character
    • First-letter with the 'upwards ancora' punctuation character
    • First-letter with the 'dotted right-pointing angle' punctuation character
    • First-letter with the 'ideographic comma' punctuation character
    • First-letter with the 'ideographic full stop' punctuation character
    • First-letter with the 'ditto mark' punctuation character
    • First-letter with the 'part alternation mark' punctuation character
    • First-letter with the 'katakana middle dot' punctuation character
    • First-letter with the 'presentation form for vertical comma' punctuation character
    • First-letter with the 'presentation form for vertical ideographic comma' punctuation character
    • First-letter with the 'presentation form for vertical ideographic full stop' punctuation character
    • First-letter with the 'presentation form for vertical colon' punctuation character
    • First-letter with the 'presentation form for vertical semicolon' punctuation character
    • First-letter with the 'presentation form for vertical exclamation mark' punctuation character
    • First-letter with the 'presentation form for vertical question mark' punctuation character
    • First-letter with the 'presentation form for vertical horizontal ellipsis' punctuation character
    • First-letter with the 'presentation form for vertical two dot leader' punctuation character
    • First-letter with the 'sesame dot' punctuation character
    • First-letter with the 'white sesame dot' punctuation character
    • First-letter with the 'dashed overline' punctuation character
    • First-letter with the 'centreline overline' punctuation character
    • First-letter with the 'wavy overline' punctuation character
    • First-letter with the 'double wavy overline' punctuation character
    • First-letter with the 'small comma' punctuation character
    • First-letter with the 'small ideographic comma' punctuation character
    • First-letter with the 'small full stop' punctuation character
    • First-letter with the 'small semicolon' punctuation character
    • First-letter with the 'small colon' punctuation character
    • First-letter with the 'small question mark' punctuation character
    • First-letter with the 'small exclamation mark' punctuation character
    • First-letter with the 'small number sign' punctuation character
    • First-letter with the 'small ampersand' punctuation character
    • First-letter with the 'small asterisk' punctuation character
    • First-letter with the 'small reverse solidus' punctuation character
    • First-letter with the 'small percent sign' punctuation character
    • First-letter with the 'small commercial at' punctuation character
    • First-letter with the 'fullwidth exclamation mark' punctuation character
    • First-letter with the 'fullwidth quotation mark' punctuation character
    • First-letter with the 'fullwidth number sign' punctuation character
    • First-letter with the 'fullwidth percent sign' punctuation character
    • First-letter with the 'fullwidth ampersand' punctuation character
    • First-letter with the 'fullwidth apostrophe' punctuation character
    • First-letter with the 'fullwidth asterisk' punctuation character
    • First-letter with the 'fullwidth comma' punctuation character
    • First-letter with the 'fullwidth full stop' punctuation character
    • First-letter with the 'fullwidth solidus' punctuation character
    • First-letter with the 'fullwidth colon' punctuation character
    • First-letter with the 'fullwidth semicolon' punctuation character
    • First-letter with the 'fullwidth question mark' punctuation character
    • First-letter with the 'fullwidth commercial at' punctuation character
    • First-letter with the 'fullwidth reverse solidus' punctuation character
    • First-letter with the 'halfwidth ideographic full stop' punctuation character
    • First-letter with the 'halfwidth ideographic comma' punctuation character
    • First-letter with the 'halfwidth katakana middle dot' punctuation character
    • First-letter with the 'aegean word separator line' punctuation character
    • First-letter with the 'aegean word separator dot' punctuation character
    • First-letter with the 'ugaritic word divider' punctuation character
    • First-letter with the 'kharoshthi punctuation dot' punctuation character
    • First-letter with the 'kharoshthi punctuation small circle' punctuation character
    • First-letter with the 'kharoshthi punctuation circle' punctuation character
    • First-letter with the 'kharoshthi punctuation crescent bar' punctuation character
    • First-letter with the 'kharoshthi punctuation mangalam' punctuation character
    • First-letter with the 'kharoshthi punctuation lotus' punctuation character
    • First-letter with the 'kharoshthi punctuation danda' punctuation character
    • First-letter with the 'kharoshthi punctuation double danda' punctuation character
    • First-letter with the 'kharoshthi punctuation lines' punctuation character
    • First-letter with the 'left parenthesis' punctuation character
    • First-letter with the 'left square bracket' punctuation character
    • First-letter with the 'left curly bracket' punctuation character
    • First-letter with the 'tibetan mark gug rtags gyon' punctuation character
    • First-letter with the 'tibetan mark ang khang gyon' punctuation character
    • First-letter with the 'ogham feather mark' punctuation character
    • First-letter with the 'single low-9 quotation mark' punctuation character
    • First-letter with the 'double low-9 quotation mark' punctuation character
    • First-letter with the 'left square bracket with quill' punctuation character
    • First-letter with the 'superscript left parenthesis' punctuation character
    • First-letter with the 'subscript left parenthesis' punctuation character
    • First-letter with the 'left-pointing angle bracket' punctuation character
    • First-letter with the 'top square bracket' punctuation character
    • First-letter with the 'medium left parenthesis ornament' punctuation character
    • First-letter with the 'medium flattened left parenthesis ornament' punctuation character
    • First-letter with the 'medium left-pointing angle bracket ornament' punctuation character
    • First-letter with the 'heavy left-pointing angle quotation mark ornament' punctuation character
    • First-letter with the 'heavy left-pointing angle bracket ornament' punctuation character
    • First-letter with the 'light left tortoise shell bracket ornament' punctuation character
    • First-letter with the 'medium left curly bracket ornament' punctuation character
    • First-letter with the 'left s-shaped bag delimiter' punctuation character
    • First-letter with the 'mathematical left white square bracket' punctuation character
    • First-letter with the 'mathematical left angle bracket' punctuation character
    • First-letter with the 'mathematical left double angle bracket' punctuation character
    • First-letter with the 'left white curly bracket' punctuation character
    • First-letter with the 'left white parenthesis' punctuation character
    • First-letter with the 'z notation left image bracket' punctuation character
    • First-letter with the 'z notation left binding bracket' punctuation character
    • First-letter with the 'left square bracket with underbar' punctuation character
    • First-letter with the 'left square bracket with tick in top corner' punctuation character
    • First-letter with the 'left square bracket with tick in bottom corner' punctuation character
    • First-letter with the 'left angle bracket with dot' punctuation character
    • First-letter with the 'left arc less-than bracket' punctuation character
    • First-letter with the 'double left arc greater-than bracket' punctuation character
    • First-letter with the 'left black tortoise shell bracket' punctuation character
    • First-letter with the 'left wiggly fence' punctuation character
    • First-letter with the 'left double wiggly fence' punctuation character
    • First-letter with the 'left-pointing curved angle bracket' punctuation character
    • First-letter with the 'left angle bracket' punctuation character
    • First-letter with the 'left double angle bracket' punctuation character
    • First-letter with the 'left corner bracket' punctuation character
    • First-letter with the 'left white corner bracket' punctuation character
    • First-letter with the 'left black lenticular bracket' punctuation character
    • First-letter with the 'left tortoise shell bracket' punctuation character
    • First-letter with the 'left white lenticular bracket' punctuation character
    • First-letter with the 'left white tortoise shell bracket' punctuation character
    • First-letter with the 'left white square bracket' punctuation character
    • First-letter with the 'reversed double prime quotation mark' punctuation character
    • First-letter with the 'ornate left parenthesis' punctuation character
    • First-letter with the 'presentation form for vertical left white lenticular bracket' punctuation character
    • First-letter with the 'presentation form for vertical left parenthesis' punctuation character
    • First-letter with the 'presentation form for vertical left curly bracket' punctuation character
    • First-letter with the 'presentation form for vertical left tortoise shell bracket' punctuation character
    • First-letter with the 'presentation form for vertical left black lenticular bracket' punctuation character
    • First-letter with the 'presentation form for vertical left double angle bracket' punctuation character
    • First-letter with the 'presentation form for vertical left angle bracket' punctuation character
    • First-letter with the 'presentation form for vertical left corner bracket' punctuation character
    • First-letter with the 'presentation form for vertical left white corner bracket' punctuation character
    • First-letter with the 'presentation form for vertical left square bracket' punctuation character
    • First-letter with the 'small left parenthesis' punctuation character
    • First-letter with the 'small left curly bracket' punctuation character
    • First-letter with the 'small left tortoise shell bracket' punctuation character
    • First-letter with the 'fullwidth left parenthesis' punctuation character
    • First-letter with the 'fullwidth left square bracket' punctuation character
    • First-letter with the 'fullwidth left curly bracket' punctuation character
    • First-letter with the 'fullwidth left white parenthesis' punctuation character
    • First-letter with the 'halfwidth left corner bracket' punctuation character
    • First-letter pseudo-element
    • First-letter pseudo-element with image missing alt text
    • First-letter as a digit
    • First-letter and :before
    • First-letter with leading line break
    • First-letter with with list items
    • First-letter with table cell elements
    • First-letter with inline-block elements
    • First-letter and valid properties
    • First-letter as a float
    • First-letter using margin
    • First-letter using vertical-align and line-height
    • First-letter with img preceding text
    • Inline-block usage with :first-letter
    • First-letter with punctuation
    • First-letter in descendents
    • First-letter and letter combinations
    • First-letter on list-style-position: inside
    • First-letter in different elements than its punctuation
    • First-line pseudo-element
    • First-line selector applicability to table cells
    • Table cells usage with :first-line
    • First-line and in-flow block level descendents
    • First-line and inline elements
    • First-line and font property
    • First-line and allowed properties
    • First-line and inapplicable properties
    • First-line after a BR
    • First-line selector applicability to table captions
    • First-line selector applicability to inline-blocks
    • Focus selector on controls
    • Condensing selectors
    • Hover selector on a simple element
    • HTML case sensitivity - Simple selectors
    • Simple ID selectors
    • Invalid ID selector syntax - Begins with hyphen
    • Invalid ID selector syntax - whitespace between # and id
    • Invalid ID selector syntax - Begins with numerals
    • Simple ID selectors specificity over attribute selectors
    • Selectors :lang pseudo-class
    • Empty :lang selector
    • Invalid language name for :lang selector
    • Inherited lang attribute selected
    • Lang selector and document language set via meta tag
    • Visited and link simple case
    • Visited and link in the same selector
    • Visited links may return to unvisited
    • Pseudo elements before simple selector
    • First-line pseudo-element case sensitivity
    • Psuedo-classes and layout
    • First-letter pseudo-element case sensitivity
    • First-child pseudo-element case sensitivity
    • After and before case sensitivity
    • Visited pseudo-element case sensitivity
    • Hover pseudo-element case sensitivity
    • Focus pseudo-element case sensitivity
    • Multiple pseudo-classes - Link, first-child, hover
    • Pseudo elements before attribute selector
    • Pseudo elements before child selector
    • Pseudo elements not the last (invalid) - Sibling selector
    • Simple sibling selector
    • Sibling selector with non-element node
    • Sibling selector with non element node
    • Type selectors
    • Universal selector
    • Implied universal selector for pseudo selector
    • Implied universal selector for class selector
    • Implied universal selector for ID
• Chapter 6
  • Rules
    • @import not the first declaration
    • Importing external stylesheets with @import
    • @import with string
    • @import with media-dependency
    • @import with 'all' media dependency
    • @import with 'screen' media dependency
    • @import with charset
    • User style sheets
    • Author stylesheets override user stylsheets
    • !important author rules and user stylsheet
    • !important user rules and normal author rules
    • Redefining rules
    • User style sheets and redefining rules
    • Author rules local and external
    • !important and shorthand properties
    • !important and normal author rules
    • !important user rules and !important author rules
    • !important user rules and normal user rules
    • Overriding the default style sheet
    • HTML 'align' attribute vs CSS text-align specificity
    • HTML 'background' attribute vs CSS background specificity
    • HTML 'bgcolor' attribute vs CSS background-color specificity
    • HTML 'cellpadding' attribute vs CSS padding specificity
    • HTML 'clear' attribute vs CSS clear specificity
    • HTML 'color' attribute vs CSS color specificity
    • HTML 'cols' attribute vs CSS width specificity
    • HTML 'width' attribute vs CSS width specificity
    • HTML 'face' attribute vs CSS font-family specificity
    • HTML 'valign' attribute vs CSS vertical-align specificity
    • HTML 'frame' attribute vs CSS border specificity
    • HTML 'height' attribute vs CSS height specificity
    • HTML 'hspace' attribute vs CSS margin specificity
    • HTML 'vspace' attribute vs CSS margin specificity
    • HTML 'link' attribute vs CSS link specificity
    • HTML 'marginheight' attribute vs CSS margin specificity
    • HTML 'marginwidth' attribute vs CSS margin specificity
    • HTML 'noshade' attribute vs CSS color specificity
    • HTML 'nowrap' attribute vs CSS white-space specificity
    • HTML 'rows' attribute vs CSS height specificity
    • HTML 'size' attribute vs CSS height specificity
    • HTML 'text' attribute vs CSS color specificity
    • HTML 'vlink' attribute vs CSS visited specificity
    • Font tag attributes and element selector precedence
    • Font tag attributes and universal selector precedence
    • Inherit keyword
    • Inherit on non-inherited properties
    • Inherit on the root element
    • Inheritance
    • Inheriting computed values
    • Non-inherited values
    • Calculating specificity - Specificity 0010 vs 0001
    • Calculating specificity - Inline Style
    • Calculating specificity - Specificity 0100 vs 0011
    • Calculating specificity - Specificity 0011 vs 0010
    • Calculating specificity - Specificity 0002 vs 0001
    • Calculating specificity - Pseudo-element vs simple element
    • Calculating specificity - Specificity 0001 vs 0000
    • Calculating specificity - specificity 0003 vs. 0001
    • Calculating specificity - specificity 0003 vs 0002
    • User defined stylesheet can be applied
    • User defined stylesheet can be applied and persisted
    • User defined stylesheet can't override property defined in style tag
    • User defined stylesheet can't override inline style
    • Descendant selector defined in user stylesheet can be applied
• Chapter 7
  • Rules
    • @media and target mediums
    • @import and target mediums
    • Link tags and target mediums
    • Case-insensitive media types
    • Ignoring bad media types with @import
    • Ignoring bad media types with @media
    • Non-matching target mediums
    • Non-matching target mediums and @import
    • 'All' target medium
    • Non-matching target mediums (braille)
    • Non-matching target mediums (embossed)
    • Non-matching target mediums (handheld)
    • Non-matching target mediums (projection)
    • Non-matching target mediums (speech)
    • Non-matching target mediums (tty)
    • Non-matching target mediums (tv)
    • Multiple target mediums
• Chapter 8
  • Properties
    • border
      • Border set using <border-width>
      • Border set using <border-style>
      • Border set using <border-color>
      • Border set using <border-width> <border-style>
      • Border set using <border-width> <border-color>
      • Border set using <border-style> <border-width>
      • Border set using <border-style> <border-color>
      • Border set using <border-color> <border-width>
      • Border set using <border-color> <border-style>
      • Border set using <border-width> <border-style> <border-color>
      • Border set using <border-width> <border-color> <border-style>
      • Border set using <border-style> <border-width> <border-color>
      • Border set using <border-style> <border-color> <border-width>
      • Border set using <border-color> <border-width> <border-style>
      • Border set using <border-color> <border-style> <border-width>
      • Border set to 'inherit', inheriting one value
      • Border set to 'inherit', inheriting two values
      • Border set to 'inherit', inheriting three values
    • margin
      • Margin set using a single value
      • Margin set to using two values
      • Margin set to using three values
      • Margin set to using four values
      • Margin with a value of 'auto'
      • Margin set to 'inherit', inheriting only one value
      • Margin set to 'inherit', inheriting two values
      • Margin set to 'inherit', inheriting three values
      • Margin set to 'inherit', inheriting four values
    • padding
      • Padding set using a single value
      • Padding set using two values
      • Padding set using three values
      • Padding set using four values
      • Padding inheriting one value
      • Padding inheriting two values
      • Padding inheriting three values
      • Padding inheriting four values
  • Rules
    • Border-width - Relation of thin, medium, and thick
    • Margin backgrounds and transparency
    • CSS 2.1 Test Suite: Margin on non-replaced inline elements
    • CSS 2.1 Test Suite: Margin-top and margin-bottom on inline elements
    • Margin shorthand - One value application to all sides
    • Margin shorthand - Two values application to top, bottom and left, right
    • Margin shorthand - Three values application to top and left, right and bottom
    • Margin shorthand - four values application to top, left, right, bottom
    • Padding shorthand - One value application to all sides
    • Padding shorthand - two values application to top, bottom and left, right
    • Padding shorthand - three values application to top and left, right and bottom
    • Padding shorthand - Four values application to top, left, right, bottom
• Chapter 9
  • Properties
    • bottom
      • Bottom using pixels with a value of negative zero, -0px
      • Bottom using pixels with a value of zero, 0px
      • Bottom using pixels with a value of positive zero, +0px
      • Bottom using pixels with a nominal value, 96px
      • Bottom using pixels with a positive nominal value, +96px
      • Bottom using points with a value of negative zero, -0pt
      • Bottom using points with a value of zero, 0pt
      • Bottom using points with a value of positive zero, +0pt
      • Bottom using points with a nominal value, 72pt
      • Bottom using points with a positive nominal value, +72pt
      • Bottom using picas with a value of negative zero, -0pc
      • Bottom using picas with a value of zero, 0pc
      • Bottom using