These are my legal CSS Hacks for fixing web browser quirks or outright bugs. Please enjoy, I have been working on them for years. May it help you if you need them. Please read here first: [What are these CSS Hacks Anyway?] Then check my [Live CSS Hacks Test Page] and also [BrowserHacks.com] where I sent new hacks and test submissions for the site.
Versions 3.0, 3.5, and 3.6 of Firefox have some differing CSS.
Here is a CSS hack I created as a one-liner using a pseudoclass for 3.0 and up:
/* Firefox 3+ */
_:-moz-loading, :root .selector { property:value; }
Author: Jeff Clayton
Here is one created for all of Firefox 3.0-3.6 (3.x)
/* Firefox 3-3.6 (Firefox 3.x) */
_:not(), _:-moz-loading, .selector { property:value; }
Author: Jeff Clayton
As mentioned above, to test this live, view it on my test page at:
[ http://browserstrangeness.bitbucket.org/css_hacks.html ]
IT Director/Senior Software Engineer, Photographer I test and create new CSS web page formatting hacks for BrowserHacks.com for the purpose of repairing web sites. PS-- CSS hacks are fun, but please attempt good CSS first unless in a bind. See Test Pages: https://browserstrangeness.bitbucket.io and https://browserstrangeness.github.io
Jeff Clayton IT Director / Senior Software Engineer / Film & Photography 
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