Sources

"CSS: The Definitive Guide"; Eric Meyer; O'Reilly
http://sureshjain.wordpress.com/2007/07/06/53/ - Convert em, px, pt, and % in CSS
http://www.webmasterworld.com/forum83/7781.htm - Converting em to pixels

http://www.alistapart.com/articles/horizdropdowns - CSS Dropdown Menus
http://curtismorley.com/2006/10/06/my-drop-down-menus-are-behind-my-flash/

http://www.w3.org/TR/css3-selectors/#attribute-selectors - Attribute Selectors
http://gtwebdev.com/workshop/floats/enclosing-floats.php - Enclosing Floats
http://codepunk.hardwar.org.uk/css2js.html - CSS Properties to JavaScript DOM Reference

http://www.brainjar.com/css/positioning/default5.asp - form elements visible through positioned elements
http://www.brainjar.com/css/positioning/default2.asp - floating elements

http://www.positioniseverything.net/explorer/doubled-margin.html
http://davidwalsh.name/prevent-double-margin-padding-ie6-css-float/
http://positioniseverything.net/explorer/dup-characters.html - HTML Comments between floated elements

http://www.eskimo.com/~bloo/indexdot/css/syntax/selectors/selectors.htm
http://www.quirksmode.org/css/contents.html
http://www.dynamicsitesolutions.com/css/filters/support-chart/

http://msdn.microsoft.com/workshop/author/filter/reference/filters/alphaimageloader.asp - PNG Alpha Transparency
http://msdn.microsoft.com/workshop/author/filter/reference/properties/sizingmethod_1.asp - PNG Alpha Transparency

http://www.webdevout.net/css-hacks - CSS Hacks
http://www.modxcms.com/css-hacking-important.html - CSS Hacking !important
http://css.maxdesign.com.au/floatutorial/ - CSS Float Tutorial
http://www.westciv.com/style_master/academy/css_tutorial/
http://www.htmlhelp.com/reference/css/
http://www.w3schools.com/css/
http://htmlhelp.com/reference/css/style-html.html - Linking Style Sheets to HTML

http://www.dave-woods.co.uk/?p=144 - 100% Height Layout Using CSS

Resources URL:

notes/css/resources

Sources URL:

notes/css/sources