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All you want to know about CSS support in IE (from 5.5 to 9). http://msdn.microsoft.com/en-us/library/cc351024%28v=vs.85%29.aspx This is official Microsoft document.

Nice list of CSS selectors and properties that can be used after dropping IE6 support. http://www.bennadel.com/blog/2306-What-CSS-Properties-Are-Supported-When-You-Drop-IE6-Support.htm

http://buildmypinnedsite.com/ This is really interesting how this can integrate with Windows7. Google Chrome is about WebApplications, now I think that this is even better. WebApplications really integrated with Operating System. + one that this is without creating browser addon! Just paste some additional markup to your html and this will start working. I am not really fan of Microsoft, but they are for sure innovative, if only it plays well with implementing standards....

http://jonathanstegall.com/2009/01/15/ie-z-index-bug-with-css-dropdown-menu/ + po polsku:  http://blog.wilgucki.pl/2011/05/jak-naprawic-z-index-w-ie7.html

Świetnie zebrana lista hacków na starsze wersje IE by uzyskać efekty dostępne w CSS3 http://blog.end3r.com/121/css3-vs-internet-explorer-6/

Interesting project to bring IE6 browser to newer IE6 versions: http://www.browsium.com/

Instead of placing it in html, set it with .htaccess: Header set X-UA-Compatible "IE=edge" http://www.456bereastreet.com/archive/201103/x-ua-compatible_and_html5/

More reading:  http://www.sigsiu.net/forum/community-board-for-troubleshooting-problems/bottom-half-of-page-missing-when-viewed-in-ie8/