KM doesnt seem to support the css property for <span> properly.
My css looks like this.
BODY {
background-color : #E1CDA8;
color : Navy;
font-family : Arial, sans-serif;
}
.Bold {
background-color : transparent;
color : Navy;
font-weight : bold;
font-family : sans-serif;}

The problematic HTML looks like this.
<Span class="Bold">Text Goes Here</Span>
KM honors the Bold and Navy specs but does not honor the change of Font. I do not have this problem with IE. However, this problem does exist in NS6.2.2. Is this a case of IE using no standard css code. Or is this a bug with KM and NS.

What changes you would expect? Font-family that you're using there will not change anything becuase Arial specified for body already belongs to sans-serif family.

Change font-family for body to serif and you will see, that setting it to sans-serif in span works.