It can keep edited style through page request and even apply style to similar pages (sub pages).
- Firefox 10 Is Here. Is it Worth Your Time? (mashable.com)
- Mozilla Launches Firefox 11 Beta with Add-on Sync, SPDY Support and a 3D Page Inspector (siliconfilter.com)
- Firefox 10 Arrives with Powerful New Developer Tools (techmadly.com)
- Firefox 11 to get add-on sync (download.cnet.com)