CSS Works for IE, but not in netscape & mozilla

CSS and Browser versions

[grahamlovelady]

This is in my CSS File
a.header:link { color: white; background: transparent;
font-family: Verdana, Arial, Helvetica,
sans-serif; font-size='80%';}
a.header:visited{ color: white; background: transparent;
font-family: Verdana, Arial, Helvetica,
sans-serif; font-size='80%';}
a.header:hover { color: yellow; background: transparent;
font-family: Verdana, Arial, Helvetica,
sans-serif; font-size='80%';}
a.header:active { color: white; background: transparent;
font-family: Verdana, Arial, Helvetica,
sans-serif; font-size='80%';}

This is in my HTML
<a class='header' href='./'>Home</a>

IE works great, but Mozilla and Netscape seem to ignore it.

Any help would be appreciated

[benihana]

font-size='80%';

should be

font-size:80%;

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