Wednesday, November 20, 2013

CSS hack for Firefox

Using conditional comments it is easy to target Internet Explorer with browser-specific CSS rules:

<!--[if IE 6]>
...include IE6-specific stylesheet here...

Sometimes it is the Gecko engine (Firefox) that misbehaves. What would be best way to target only Firefox with your CSS rules and not a single other browser? That is, not only should Internet Explorer ignore the Firefox-only rules, but also WebKit and Opera should.

<!DOCTYPE html>

<style type="text/css">
@-moz-document url-prefix() {
    h1 {
        color: red;

<h1>This should be red in FF</h1>


It's based on yet another Mozilla specific CSS extension. There's a whole list for these CSS extensions right here:

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