Working on a sample code now. But Is your div tag having an Id of menuItem or a class of menuItem? This is my guess.
Edited : Okay, now I see. If you separate the css to another file and use a link tag to import it in, then it should be fine without using the !important command, see this :
body {background-color : green;}
a:link{ color : white;}
.menuItem a:link
{
color : black;
}
And this :
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en-US">
<head profile="http://gmpg.org/xfn/11">
<meta http-equiv="Content-type" content="text/html; charset=utf-8">
<title>Test page</title>
<link rel="stylesheet" href="master.css" type="text/css" media="screen" title="no title" charset="utf-8">
</head>
<body>
<div>
<a href="#">This is a link</a>
</div>
<div class="menuItem">
<a href="#">This is a link in div menuItem</a>
</div>
</body>
</html>
Hope this helps:)
Still, if I embed the css snippet into the html, then it doesn't work... Wondering why?