CSS Compatibility and Internet Explorer

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HTML and CSS Technical Articles

CSS Compatibility and Internet Explorer

This is preliminary documentation and is subject to change.

With each new release of Windows Internet Explorer, support for the Cascading Style Sheets (CSS) standard has steadily improved. Internet Explorer 6 was the first fully CSS Level 1-compliant version of Internet Explorer. Windows Internet Explorer 8 is planned to be a fully CSS Level 2.1-compliant browser, and will support some features of CSS 3.

If the browsers your Web site is targeting include earlier versions of Internet Explorer, however, you want to know the level of CSS compliance for those as well. This article provides an at-a-glance look at CSS compliance across recent versions of Internet Explorer, including support in Internet Explorer 8 Beta 1 for Developers and planned support in the final version of Internet Explorer 8.

This article's organization is loosely based on that of the CSS reference documentation on MSDN. It contains the following sections:

• Introduction
• At-rules
• Selectors
  • Element Selectors
  • Attribute Selectors
  • Combinators
  • Pseudo-classes
  • Pseudo-elements
• Attributes
  • Lists
  • Color and Background
  • Font and Text
  • Generated Content
  • Border and Layout
  • Positioning
  • Printing
  • User Interface
  • Multi-column Layout
  • Speech
  • Media Queries
• Values
  • Numbers
  • Strings
  • Shapes
  • Functions
  • Colors
  • Keywords
• Units

Introduction

Each table lists support status information for grouped CSS features across recent versions of Internet Explorer. In each section, the first table represents features introduced in CSS 2.1 or earlier, and the second table represents features planned for CSS 3.

A value of "Yes" in a cell indicates that that feature is implemented in that version of Internet Explorer. (For the "IE 8.0" column, a value of "Yes" indicates that the feature is currently planned for implementation in Internet Explorer 8.)

A value of "Partial" in a cell indicates that that feature is only partially implemented in that version of Internet Explorer. For more information, click the link to view that feature's reference page on MSDN.

A value of "No" in a cell indicates that that feature is not implemented in that version of Internet Explorer.

Note   In the few cases where a feature was supported in Internet Explorer 7, shows as not supported in Internet Explorer 8 Beta 1 for Developers, and then shows as supported in Internet Explorer 8, the discrepancy in support is due to layout engine changes between versions. Support for those features is planned to be reinstated for the final release of Internet Explorer 8.

At-rules

CSS 2.1:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
@charset	No	Yes	Yes	Yes	Yes	Yes
@import	Yes	Yes	Yes	Yes	Yes	Yes
@media	No	Yes	Yes	Yes	Yes	Yes
@page	No	Yes	Yes	Yes	Yes	Yes

CSS 3:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
@font-face	No	Yes	Yes	Yes	Yes	Yes
@namespace	No	No	No	No	No	No

Selectors

Element Selectors

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
.value { sRules }	Class (see Note)	Partial	Partial	Partial	Yes	Yes	Yes
#value { sRules }	ID	Yes	Yes	Yes	Yes	Yes	Yes
E { sRules }	Type	Yes	Yes	Yes	Yes	Yes	Yes
* { sRules }	Universal	No	No	No	Yes	Yes	Yes

Note   Prior to Internet Explorer 7, there was a two-class selector limit per element.

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
ns|E { sRules }	Namespaced	No	No	No	No	No	No

Attribute Selectors

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
[att=val] { sRules }	Equality [=]	No	No	No	Yes	Yes	Yes
[att] { sRules }	Existence []	No	No	No	Yes	Yes	Yes
[att|=val] { sRules }	Hyphen [|=]	No	No	No	Yes	Yes	Yes
[att~=val] { sRules }	Whitespace [~=]	No	No	No	Yes	Yes	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
[ns|attr] { sRules }	Namespaced	No	No	No	Yes	Yes	Yes
[att^=val] { sRules }	Prefix [^=]	No	No	No	Yes	Yes	Yes
[att*=val] { sRules }	Substring [*=]	No	No	No	Yes	Yes	Yes
[att$=val] { sRules }	Suffix [$=]	No	No	No	Yes	Yes	Yes

Combinators

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
E + F { sRules }	Adjacent Sibling (+)	No	No	No	Yes	Yes	Yes
E > F { sRules }	Child (>)	No	No	No	Yes	Yes	Yes
E F { sRules }	Descendant	Yes	Yes	Yes	Yes	Yes	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
E ~ F { sRules }	General Sibling (~)	No	No	No	Yes	Yes	Yes

Pseudo-classes

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
:active { sRules }	:active	No	No	No	Partial	Partial	Yes
:after { sRules }	:after	No	No	No	No	Yes	Yes
:before { sRules }	:before	No	No	No	No	Yes	Yes
:first-child { sRules }	:first-child	No	No	No	Yes	Yes	Yes
:focus { sRules }	:focus	No	No	No	No	No	Yes
:hover { sRules }	:hover	No	No	No	No	No	Yes
:lang(C) { sRules }	:lang()	No	No	No	No	Yes	Yes
:link { sRules }	:link	Yes	Yes	Yes	Yes	Yes	Yes
:visited { sRules }	:visited	Yes	Yes	Yes	Yes	Yes	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
:root { sRules }	:root	No	No	No	No	No	No
:nth-child() { sRules }	:nth-child()	No	No	No	No	No	No
:nth-last-child() { sRules }	:nth-last-child()	No	No	No	No	No	No
:nth-of-type() { sRules }	:nth-of-type()	No	No	No	No	No	No
:nth-last-of-type() { sRules }	:nth-last-of-type()	No	No	No	No	No	No
:last-child { sRules }	:last-child	No	No	No	No	No	No
:first-of-type { sRules }	:first-of-type	No	No	No	No	No	No
:last-of-type { sRules }	:last-of-type	No	No	No	No	No	No
:only-child { sRules }	:only-child	No	No	No	No	No	No
:only-of-type { sRules }	:only-of-type	No	No	No	No	No	No
:empty { sRules }	:empty	No	No	No	No	No	No
:target { sRules }	:target	No	No	No	No	No	No
:not(X) { sRules }	:not()	No	No	No	No	No	No
:enabled { sRules }	:enabled	No	No	No	No	No	No
:disabled { sRules }	:disabled	No	No	No	No	No	No
:checked { sRules }	:checked	No	No	No	No	No	No
:indeterminate { sRules }	:indeterminate	No	No	No	No	No	No
:default { sRules }	:default	No	No	No	No	No	No
:valid { sRules }	:valid	No	No	No	No	No	No
:invalid { sRules }	:invalid	No	No	No	No	No	No
:in-range { sRules }	:in-range	No	No	No	No	No	No
:out-of-range { sRules }	:out-of-range	No	No	No	No	No	No
:required { sRules }	:required	No	No	No	No	No	No
:optional { sRules }	:optional	No	No	No	No	No	No
:read-only { sRules }	:read-only	No	No	No	No	No	No
:read-write { sRules }	:read-write	No	No	No	No	No	No

Pseudo-elements

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
:first-letter { sRules }	:first-letter	No	Yes	Yes	Yes	Yes	Yes
:first-line { sRules }	:first-line	No	Yes	Yes	Yes	Yes	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
::before { sRules }	::before	No	No	No	No	No	No
::after { sRules }	::after	No	No	No	No	No	No
::first-letter { sRules }	::first-letter	No	No	No	No	No	No
::first-line { sRules }	::first-line	No	No	No	No	No	No
::selection { sRules }	::selection	No	No	No	No	No	No
::value { sRules }	::value	No	No	No	No	No	No
::choices { sRules }	::choices	No	No	No	No	No	No
::repeat-item { sRules }	::repeat-item	No	No	No	No	No	No
::repeat-index { sRules }	::repeat-index	No	No	No	No	No	No

Attributes

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ sRule!important  }	!important Declaration	Partial	Partial	Partial	Yes	Yes	Yes

Lists

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ list-style : sStyle }	list-style	Yes	Yes	Yes	Yes	Yes	Yes
{ list-style-image : sStyle }	list-style-image	Yes	Yes	Yes	Yes	Yes	Yes
{ list-style-position : sStyle }	list-style-position	Yes	Yes	Yes	Yes	Yes	Yes
{ list-style-type : sStyle }	list-style-type	No	No	No	Partial	Yes	Yes

Color and Background

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ color : sColor }	color	Yes	Yes	Yes	Yes	Yes	Yes
{ background : sBackground }	background	Yes	Yes	Yes	Yes	Yes	Yes
{ background-attachment : sAttachment }	background-attachment	Partial	Partial	Partial	Yes	Yes	Yes
{ background-color : sColor }	background-color	Yes	Yes	Yes	Yes	Yes	Yes
{ background-image : sLocation }	background-image	Yes	Yes	Yes	Yes	Yes	Yes
{ background-position : sPosition }	background-position	Partial	Partial	Partial	Partial	Yes	Yes
{ background-repeat : sRepeat }	background-repeat	Yes	Yes	Yes	Yes	Yes	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ color-profile : sProfile }	color-profile	No	No	No	No	No	No
{ rendering-intent : sIntent }	rendering-intent	No	No	No	No	No	No
{ background : sBackground1, sBackground2, etc. }	background (multiple)	No	No	No	No	No	No
{ background-clip : sClip }	background-clip	No	No	No	No	No	No
{ background-origin : sOrigin }	background-origin	No	No	No	No	No	No
{ background-break : sBreak }	background-break	No	No	No	No	No	No
{ background-size : sSize }	background-size	No	No	No	No	No	No

Font and Text

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ direction : sDirection }	direction	Yes	Yes	Yes	Yes	Yes	Yes
{ font : sFont }	font	Yes	Yes	Yes	Yes	Yes	Yes
{ font-family : sFamily }	font-family	Yes	Yes	Yes	Yes	Yes	Yes
{ font-size : sSize }	font-size	Yes	Yes	Yes	Yes	Yes	Yes
{ font-style : sStyle }	font-style	Yes	Yes	Yes	Yes	Yes	Yes
{ font-variant : sVariant }	font-variant	Yes	Yes	Yes	Yes	Yes	Yes
{ font-weight : sWeight }	font-weight	Partial	Partial	Partial	Partial	Partial	Yes
{ letter-spacing : sSpacing }	letter-spacing	Yes	Yes	Yes	Yes	Yes	Yes
{ line-height : sHeight }	line-height	Yes	Yes	Yes	Yes	Yes	Yes
{ text-align : sAlign }	text-align	Yes	Yes	Yes	Yes	Yes	Yes
{ text-decoration : sDecoration }	text-decoration	Yes	Yes	Yes	Yes	Yes	Yes
{ text-indent : sIndent }	text-indent	Yes	Yes	Yes	Yes	Yes	Yes
{ text-transform : sTransform }	text-transform	Yes	Yes	Yes	Yes	Yes	Yes
{ unicode-bidi : sAlign }	unicode-bidi	Yes	Yes	Yes	Yes	Yes	Yes
{ vertical-align : sAlign }	vertical-align	Yes	Yes	Yes	Yes	Yes	Yes
{ white-space : sWrap }	white-space	Partial	Partial	Partial	Partial	Yes	Yes
{ word-spacing : sSpacing }	word-spacing	Partial	Partial	Partial	Partial	No	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ font-effect : sEffect }	font-effect	No	No	No	No	No	No
{ font-emphasize : sEmphasize }	font-emphasize	No	No	No	No	No	No
{ font-size-adjust : sSizeAdjust }	font-size-adjust	No	No	No	No	No	No
{ font-smooth : sSmooth }	font-smooth	No	No	No	No	No	No
{ font-stretch : sStretch }	font-stretch	No	No	No	No	No	No
{ hanging-punctuation : sHangingPunctuation }	hanging-punctuation	No	No	No	No	No	No
{ punctuation-trim : sTrim }	punctuation-trim	No	No	No	No	No	No
{ ruby-align : sRubyAlign }	ruby-align	Yes	Yes	Yes	Yes	No	Yes
{ ruby-overhang : sRubyOverhang }	ruby-overhang	Yes	Yes	Yes	Yes	No	Yes
{ ruby-position : sRubyPlacement }	ruby-position	Yes	Yes	Yes	Yes	No	Yes
{ ruby-span : sRubySpan }	ruby-span	No	No	No	No	No	No
{ text-align-last : sAlignLast }	text-align-last	Partial	Partial	Partial	Partial	Partial	Partial
{ text-emphasis : sEmphasis }	text-emphasis	No	No	No	No	No	No
{ text-justify : sJustify }	text-justify	No	Yes	Yes	Yes	Yes	Yes
{ text-outline : sOutline }	text-outline	No	No	No	No	No	No
{ text-overflow : sOverflow}	text-overflow	No	Partial	Partial	Partial	Partial	Partial
{ text-shadow : sShadow }	text-shadow	No	No	No	No	No	No
{ text-wrap : sWrap }	text-wrap	No	No	No	No	No	No
{ word-break : sBreak }	word-break	Partial	Partial	Partial	Partial	Partial	Partial
{ word-wrap : sWrap }	word-wrap	Yes	Yes	Yes	Yes	Yes	Yes
{ writing-mode : sFlow }	writing-mode	Yes	Yes	Yes	Yes	Yes	Yes

Generated Content

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ content : sContent }	content	No	No	No	No	Partial	Yes
{ counter-increment : sCounter }	counter-increment	No	No	No	No	Partial	Yes
{ counter-reset : sCounter }	counter-reset	No	No	No	No	Partial	Yes
{ quotes : sQuotes }	quotes	No	No	No	No	No	Yes

Border and Layout

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ border : sBorder }	border	Yes	Yes	Yes	Yes	Yes	Yes
{ border-bottom : sBottom }	border-bottom	No	Yes	Yes	Yes	Yes	Yes
{ border-bottom-color : sColor }	border-bottom-color	Yes	Yes	Yes	Yes	Yes	Yes
{ border-bottom-style : sStyle }	border-bottom-style	No	Yes	Yes	Yes	Yes	Yes
{ border-bottom-width : sWidth }	border-bottom-width	No	Yes	Yes	Yes	Yes	Yes
{ border-collapse : sCollapse }	border-collapse	Partial	Partial	Partial	Partial	Yes	Yes
{ border-color : sColor }	border-color	Yes	Yes	Yes	Yes	Yes	Yes
{ border-left : sLeft }	border-left	No	Yes	Yes	Yes	Yes	Yes
{ border-left-color : sColor }	border-left-color	Yes	Yes	Yes	Yes	Yes	Yes
{ border-left-style : sStyle }	border-left-style	No	Yes	Yes	Yes	Yes	Yes
{ border-left-width : sWidth }	border-left-width	No	Yes	Yes	Yes	Yes	Yes
{ border-right : sRight}	border-right	No	Yes	Yes	Yes	Yes	Yes
{ border-right-color : sColor }	border-right-color	Yes	Yes	Yes	Yes	Yes	Yes
{ border-right-style : sStyle }	border-right-style	No	Yes	Yes	Yes	Yes	Yes
{ border-right-width : sWidth }	border-right-width	No	Yes	Yes	Yes	Yes	Yes
{ border-spacing : sSpacing }	border-spacing	No	No	No	No	Yes	Yes
{ border-style : sStyle }	border-style	No	Partial	Partial	Partial	Yes	Yes
{ border-top : sTop }	border-top	No	Yes	Yes	Yes	Yes	Yes
{ border-top-color : sColor }	border-top-color	Yes	Yes	Yes	Yes	Yes	Yes
{ border-top-style : sStyle }	border-top-style	No	Yes	Yes	Yes	Yes	Yes
{ border-top-width : sWidth }	border-top-width	No	Yes	Yes	Yes	Yes	Yes
{ border-width : sWidth }	border-width	Yes	Yes	Yes	Yes	Yes	Yes
{ caption-side : sLocation }	caption-side	No	No	No	No	Yes	Yes
{ clear : sClear }	clear	Yes	Yes	Yes	Yes	Yes	Yes
{ empty-cells : sEmptyCells }	empty-cells	No	No	No	Partial	Partial	Yes
{ float : sFloat }	float	Yes	Yes	Yes	Yes	Yes	Yes
{ margin : sMargin }	margin	Yes	Yes	Yes	Yes	Yes	Yes
{ margin-bottom : sHeight }	margin-bottom	Yes	Yes	Yes	Yes	Yes	Yes
{ margin-left : sWidth }	margin-left	Yes	Yes	Yes	Yes	Yes	Yes
{ margin-right : sWidth }	margin-right	Yes	Yes	Yes	Yes	Yes	Yes
{ margin-top : sHeight }	margin-top	Yes	Yes	Yes	Yes	Yes	Yes
{ padding : sPadding }	padding	Yes	Yes	Yes	Yes	Yes	Yes
{ padding-bottom : sPadding }	padding-bottom	Yes	Yes	Yes	Yes	Yes	Yes
{ padding-left : sPadding }	padding-left	Yes	Yes	Yes	Yes	Yes	Yes
{ padding-right : sPadding }	padding-right	Yes	Yes	Yes	Yes	Yes	Yes
{ padding-top : sPadding }	padding-top	Yes	Yes	Yes	Yes	Yes	Yes
{ table-layout : sLayout }	table-layout	Yes	Yes	Yes	Yes	Yes	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ border-break : sBreak }	border-break	No	No	No	No	No	No
{ border-image : sImage }	border-image	No	No	No	No	No	No
{ border-radius : sRadius }	border-radius	No	No	No	No	No	No
{ box-shadow : sShadow }	box-shadow	No	No	No	No	No	No

Positioning

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ bottom : sBottom }	bottom	No	Partial	Partial	Partial	Partial	Yes
{ clip : sClip }	clip	No	Yes	Yes	Yes	Yes	Yes
{ display : sDisplay }	display	Partial	Partial	Partial	Partial	Partial	Yes
{ height : sHeight }	height	Yes	Yes	Yes	Yes	Yes	Yes
{ left : sPosition }	left	No	Partial	Partial	Partial	Partial	Yes
{ max-height : sMaxHeight }	max-height	No	No	No	Yes	Yes	Yes
{ max-width : sWidth }	max-width	No	No	No	Yes	Yes	Yes
{ min-height : sMinHeight }	min-height	No	No	No	Yes	Yes	Yes
{ min-width : sMinWidth }	min-width	No	No	No	Yes	Yes	Yes
{ overflow : sOverflow }	overflow	Partial	Partial	Partial	Yes	Yes	Yes
{ position : sPosition }	position	Partial	Partial	Partial	Yes	Yes	Yes
{ right : sPosition }	right	No	Partial	Partial	Partial	Partial	Yes
{ top : sTop }	top	No	Partial	Partial	Partial	Partial	Yes
{ visibility : sVisibility }	visibility	Yes	Yes	Yes	Yes	Yes	Yes
{ width : sWidth }	width	Yes	Yes	Yes	Yes	Yes	Yes
{ z-index : vOrder }	z-index	Partial	Partial	Partial	Partial	Partial	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ overflow-x : sOverflow }	overflow-x	Partial	Partial	Partial	Yes	Yes	Yes
{ overflow-y : sOverflow }	overflow-y	Partial	Partial	Partial	Yes	Yes	Yes

Printing

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ orphans : nLines }	orphans	No	No	No	No	No	Yes
{ page-break-after : sBreak }	page-break-after	Yes	Yes	Yes	Yes	No	Yes
{ page-break-before : sBreak }	page-break-before	Yes	Yes	Yes	Yes	No	Yes
{ page-break-inside : sBreak }	page-break-inside	No	No	No	No	No	Yes
{ widows : nLines }	widows	No	No	No	No	No	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ fit : sFit }	fit	No	No	No	No	No	No
{ fit-position : sPosition }	fit-position	No	No	No	No	No	No
{ image-orientation : sOrientation }	image-orientation	No	No	No	No	No	No
{ page : sPage }	page	No	No	No	No	No	No
{ size : sSize }	size	No	No	No	No	No	No

User Interface

CSS 2.1:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ cursor : sCursor }	cursor	No	Yes	Yes	Yes	No	Yes
{ outline : sOutline }	outline	No	No	No	No	Yes	Yes
{ outline-color : sColor }	outline-color	No	No	No	No	Yes	Yes
{ outline-style : sStyle }	outline-style	No	No	No	No	Yes	Yes
{ outline-width : sWidth }	outline-width	No	No	No	No	Yes	Yes

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ appearance : sAppearance }	appearance	No	No	No	No	No	No
{ box-sizing : sSizing }	box-sizing	No	No	No	No	Yes	Yes
{ icon : sIcon }	icon	No	No	No	No	No	No
{ nav-down : sNavDown }	nav-down	No	No	No	No	No	No
{ nav-index : sIndex }	nav-index	No	No	No	No	No	No
{ nav-left : sNavLeft }	nav-left	No	No	No	No	No	No
{ nav-right : sNavRight }	nav-right	No	No	No	No	No	No
{ nav-up : sNavUp }	nav-up	No	No	No	No	No	No
{ outline-offset : sOffset }	outline-offset	No	No	No	No	No	No
{ outline-radius : sRadius }	outline-radius	No	No	No	No	No	No
{ resize : sResize }	resize	No	No	No	No	No	No

Multi-column Layout

CSS 3:

		IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
{ column-break-after : sSize }	column-break-after	No	No	No	No	No	No
{ column-break-before : sSize }	column-break-before	No	No	No	No	No	No
{ column-break-inside : sSize }	column-break-inside	No	No	No	No	No	No
{ column-count : sCount }	column-count	No	No	No	No	No	No
{ column-gap : sSize }	column-gap	No	No	No	No	No	No
{ column-rule : sRule }	column-rule	No	No	No	No	No	No
{ columns : sColumns }	columns	No	No	No	No	No	No

Speech

None of the following CSS 3 speech attributes are planned for implementation in Internet Explorer 8:

• voice-volume
• voice-balance
• speak
• pause
• pause-after
• pause-before
• rest
• rest-before
• rest-after
• cue
• cue-after
• cue-before
• mark
• mark-before
• mark-after
• voice-family
• voice-rate
• voice-pitch
• voice-pitch-range
• voice-stress
• voice-duration
• phonemes

Media Queries

None of the following CSS 3 media query attributes are planned for implementation in Internet Explorer 8:

• width
• height
• device-width
• device-height
• device-aspect-ratio
• color
• color-index
• monochrome
• resolution
• scan
• grid

Values

Numbers

CSS 2.1:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
<number>	Yes	Yes	Yes	Yes	Yes	Yes
<length>	Yes	Yes	Yes	Yes	Yes	Yes
<percentage>	Yes	Yes	Yes	Yes	Yes	Yes
<integer>	Yes	Yes	Yes	Yes	Yes	Yes

CSS 3:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
<angle>	No	No	No	No	No	No
<time>	No	No	No	No	No	No
<frequency>	No	No	No	No	No	No

Strings

CSS 2.1:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
<string>	Yes	Yes	Yes	Yes	Yes	Yes
\code	No	No	Yes	Yes	Yes	Yes

Shapes

CSS 2.1:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
rect()	No	Yes	Yes	Yes	Yes	Yes

Functions

CSS 2.1:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
url()	Yes	Yes	Yes	Yes	Yes	Yes
counter()	No	No	No	No	Yes	Yes
attr()	No	No	No	No	Yes	Yes

CSS 3:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
calc()	No	No	No	No	No	No

Colors

CSS 2.1:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
<color> (names)	Yes	Yes	Yes	Yes	Yes	Yes
<color> (#rrggbb or #rgb Notation)	Yes	Yes	Yes	Yes	Yes	Yes
<color> (rgb(r,g,b) Notation)	Yes	Yes	Yes	Yes	Yes	Yes
<color> (system colors)	Yes	Yes	Yes	Yes	Yes	Yes
transparent	No	No	Partial	Yes	Yes	Yes

CSS 3:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
<color> (rgba(r,g,b,a) Notation)	No	No	No	No	No	No
<color> (hsl(h,s,l) Notation)	No	No	No	No	No	No
<color> (hsla(h,s,l,a) Notation)	No	No	No	No	No	No

Keywords

CSS 2.1:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
auto	No	No	Partial	Yes	Yes	Yes
inherit	No	No	No	No	Yes	Yes

CSS 3:

	IE 5.0	IE 5.5	IE 6.0	IE 7.0	IE 8 Beta 1	IE 8.0
initial	No	No	No	No	No	No

Units

All of the following units are supported in Internet Explorer 3.0 and later:

• px
• pt
• pc
• cm
• mm
• in
• em
• ex
• %

None of the following CSS 3 units are planned for implementation in Internet Explorer 8:

• deg
• grad
• rad
• ms
• s
• Hz
• kHz
• turn
• gd
• rem
• vw
• vh
• vm
• ch

See Also

• Cascading Style Sheets (MSDN Reference)
• Cascading Style Sheets (W3C)