A historical reference table of CSS selectors, layout features, and polyfills across legacy Internet Explorer releases (IE6 through IE11).
Archived note: Microsoft Internet Explorer is retired. This cheatsheet preserves compatibility reference data for legacy web systems maintenance.
CSS Selector Support
| Selector | IE6 | IE7 | IE8 | IE9 | IE10 | IE11 |
|---|---|---|---|---|---|---|
> (Child selector) |
✗ | ✓ | ✓ | ✓ | ✓ | ✓ |
[attr] (Attribute selector) |
✗ | ✓ | ✓ | ✓ | ✓ | ✓ |
.class1.class2 (Multiple classes) |
✗ | ✓ | ✓ | ✓ | ✓ | ✓ |
~ (General sibling) |
✗ | ✓ | ✓ | ✓ | ✓ | ✓ |
+ (Adjacent sibling) |
✗ | ✓ | ✓ | ✓ | ✓ | ✓ |
:before, :after (Single colon) |
✗ | ✗ | ✓ | ✓ | ✓ | ✓ |
:nth-child(), :last-child |
✗ | ✗ | ✗ | ✓ | ✓ | ✓ |
Feature & Web API Support
| Feature | IE6 | IE7 | IE8 | IE9 | IE10 | IE11 |
|---|---|---|---|---|---|---|
| PNG 24-bit Alpha Transparency | ✗ | ✓ | ✓ | ✓ | ✓ | ✓ |
Data URIs (data:image/...) |
✗ | ✗ | ✓ | ✓ | ✓ | ✓ |
Native JSON.parse / JSON.stringify |
✗ | ✗ | ✓ | ✓ | ✓ | ✓ |
| Cross-Origin Resource Sharing (CORS) | ✗ | ✗ | ✓ (XDomainRequest) | ✓ | ✓ | ✓ |
localStorage / sessionStorage |
✗ | ✗ | ✓ | ✓ | ✓ | ✓ |
CSS Media Queries (@media) |
✗ | ✗ | ✗ (use respond.js) | ✓ | ✓ | ✓ |
HTML5 Semantic Elements (<article>, <nav>) |
✗ | ✗ | ✗ (use html5shiv) | ✓ | ✓ | ✓ |
| CSS3 Flexbox | ✗ | ✗ | ✗ | ✗ | ✓ (-ms- 2012) | ✓ |
Conditional Comments (IE9 and Below)
<!--[if lt IE 7]> <html class="no-js ie6 oldie"> <![endif]-->
<!--[if IE 7]> <html class="no-js ie7 oldie"> <![endif]-->
<!--[if IE 8]> <html class="no-js ie8 oldie"> <![endif]-->
<!--[if IE 9]> <html class="no-js ie9"> <![endif]-->
<!--[if gt IE 9]><!--> <html class="no-js"> <!--<![endif]-->