IE7 { css2: auto; }

version 2.1 beta4

The selectors and properties below should all work according to the W3C specifications.

IE7.js

CSS Selectors

Selector	Comments	Test
parent > child		html
adjacent + sibling		html
adjacent ~ sibling		html
.multiple.classes	IE5/6 bug fixed (also applies to pseudo classes)	html
:hover	Now applies to all elements	html
:first-child		html
[attr]		html
[attr="value"]		html
[attr~="value"]		html
[attr|="value"]		html
[attr^="value"]		html
[attr$="value"]		html
[attr*="value"]		html

CSS Properties

Property	Comments	Test
background-attachment	support fixed positioning	html
background-image	PNG alpha transparency (IE5.5+)	html
bottom	height implied if top is supplied	html
cursor	support pointer for IE5.x	html
display	convert list-item to block for IE5.x
font-size	fix named font sizes (IE5.x)	html
margin	support auto (IE5.x)	html
max-height		html
max-width		html
min-height	implemented for IE5	html
min-width		html
overflow	support overflow:visible	html
position	support fixed positioning	html
right	width implied if left is supplied	html

HTML

Element	Comments	Test
abbr	IE5/6 bugs fixed	html
img	PNG alpha transparency (IE5.5+)	html
label	bind to the first child control	html

IE8.js

CSS Selectors

Selector	Comments	Test
::after		html
::before		html
:active		html
:focus		html
:lang()		html

CSS Properties

Property	Comments	Test
border-spacing	HTML tables only	html
box-sizing	content-box (assumed)	html
content	Supports the use of attr() and url()	html
property: inherit	Support for inherited property values	html

HTML

Element	Comments	Test
button[type=submit]	value submitted rather than innerText	html
form	only submit successful controls	html
object	improved support for type=image/*	html

IE9.js

CSS Selectors

Selector	Comments	Test
:checked		html
:disabled		html
:empty		html
:enabled		html
:indeterminate		html
:first-of-type		html
:last-child		html
:last-of-type		html
:not()		html
:nth-child()		html
:nth-last-child()		html
:nth-last-of-type()		html
:nth-of-type()		html
:only-child		html
:only-of-type		html
:root		html
:target		html

CSS Properties

Property	Comments	Test
opacity	IE5.5+	html

HTML

Element	Comments	Test
article, aside, audio, canvas, details, figcaption, figure, footer, header, hgroup, mark, menu, meter, nav, output, progress, section, summary, time, video	Only rendering support and basic style are provided	html

Other Bug Fixes

Bug	Comments	Test
Doubled Margin*	Position Is Everything	html
Peekaboo*	Position Is Everything	html
Unscrollable Content*	Position Is Everything	html

*These fixes are not in the standard IE7 library. They are included in a separate module ie7-squish.js.