Summarized test results:
CSS3 Syntax, Input byte stream

Intended audience: users, XHTML/HTML coders (using editors or scripting), script developers (PHP, JSP, etc.), CSS coders, Web project managers, and anyone who wants to know how character encoding detection works in current browsers for CSS style sheets.

These tests check whether user agents recognise character encoding declarations as described by the CSS Syntax Module Level 3. The test pages have HTML5 syntax and are served as text/html.

To see the test, click on the link in the left-most column. To see detailed results for a single test, click on a row and look just above the table. The detailed results show the date(s) the test result was recorded, and the version of the browser tested.

Any dependencies are shown in notes above the table, and notes below the table will usually provide any additional useful information, including an explanation of why a result was marked as 'partially successful'.


pass fail partially successful

Basic character encoding

CSS unknown encoding

@charset typos

Character encoding precedence