想知道 Firefox 支援什麼版本的 html 和 css 等相關資訊嗎??

底下可以抓：
http://www.rebron.org/mozilla/stuff/Firefox%20Datasheet%2010_4.pdf
http://www.rebron.org/mozilla/stuff/Thunderbird%20Datasheet%2010_4.pdf

Firefox:
HTML 4.0, CSS 1 & 2, DOM 1 & 2 (Core and HTML), RDF, XML 1.0, XML Namespaces 1.0,
SOAP 1.1, XSLT, XPath 1.0, XHTML 1.0, JavaScript 1.5, SSL, TLS 1.0, and more.

Protocols: HTTP, HTTPS, FTP, chrome, gopher, and more.

Graphics: JPEG, GIF, PNG, MNG, BMP, ICO, XBM



來源：SFX