Yes, the class= is a call to a font class declared in a css file, either linked or inline. You can declare font classes in the head of your page using:
<style type="text/css">
INPUT {FONT-FAMILY: geneva,arial,Verdana,Helvetica; FONT-SIZE: 10px; COLOR: #000000}
</style>
You can also define different classes that allow different fonts and styles for your input boxes by using
.classname {FONT-FAMILY: geneva,arial,Verdana,Helvetica; FONT-SIZE: 10px; COLOR: #000000}
in your style.
Hope that makes sense...
Baron