Site specific stylesheets in Mozilla
19th August 2004
New in Mozilla 1.8 Alpha 3: bug 238099—implement at-rule for matching on site/document URL. Here’s the example:
@-moz-document url-prefix(http://www.mozilla.org/) {
#q { background: white ! important; color: black ! important; }
}
Drop that in your userContent.css file for black-on-white search fields, but only for pages with URLs starting in http://www.mozilla.org/. Two other selection functions are available: domain(mozilla.org) for all page (and sub-domains) of the mozilla.org domain and url(http://www.mozilla.org/) for just the page matching that exact URL.
The sooner this makes it in to Firefox the better.
More recent articles
- Hacking the WiFi-enabled color screen GitHub Universe conference badge - 28th October 2025
- Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025
- Dane Stuckey (OpenAI CISO) on prompt injection risks for ChatGPT Atlas - 22nd October 2025