W3C CSS Gallery
Portion of CSS file for IE
W3C have a link to a core style sampler service.
The service provides 8 core style sheets which can be freely linked to.
The style sheets use "browser sniffing". Different style sheets are delivered to different browsers.
H1, H2, H3, H4, H5, H6, ..
Portion of CSS file for Netscape
{font-family: Tahoma, ...