Since CSS still has a lot of apparent confusion surrounding it, this might be a good place to use as a reference if there are any lingering concerns surrounding the code that you spent the last five hours pumping out.

Originally set up as a CSS2 tests site, I quickly crossed the border to both CSS1 and CSS3. Currently these pages contain information about selectors and declarations I happen to find interesting, or whose browser compatibility is very complicated.

I don’t much feel like creating tests for, for instance, margin or font-size because modern browsers support this pretty well and I’m usually not interested in a 1 pixel difference. Besides, such tests quickly become very complicated and I lack the typographical knowledge to delve too deeply into the various font-related declarations like line-height and letter-spacing. Finally, the existence of several units makes everything even more complicated.

Most test pages still function in quirks mode, but I’m currently moving them to valid XHTML 1.0 Transitional and strict mode. [Read the rest]