I used the CSS Validation Service available in address:

http://jigsaw.w3.org/css-validator/

The validator founds a lot of problems with CSS.

I tested drupal 5.0 beta 2, after installation standard.

Comments

webchick’s picture

Title: Don't valide CSS. » Drupal's CSS doesn't validate

Changing title slightly.

Steven’s picture

Status: Active » Closed (won't fix)

The default theme, Garland, is valid according to the current CSS3 draft. It uses e.g. the opacity attribute which, while still not 100% set in stone, is already well supported by many browsers.

CSS3 validation:
http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fwww.acko.n...

CSS2.1 validation:
http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fwww.acko.n...