Modifying Yahoo UI

[RBX]

I am a Yahoo Mail user and use Firefox.

There is a rule in Yahoo CSS file

.wide-right-rail #shellcontent {
right: 320px;
}

Each time on page load, I'd like it to be overridden with

.wide-right-rail #shellcontent {
right: 0px;
}

Does anyone have a solution to this, a Greasemonkey userscript maybe ?

 

[RBX]

This does the job Source for "yahoo mail margins" - Userscripts.org
Just needed to modify right:180px to right:0px after installing.