21.7 Mapping fonts
Try to keep your font usage in HTML very simple, using only fonts that you are certain your readers have on their systems. A browser’s substitution for an unavailable font can be quite ugly.
§21.7.1 Specifying a default font and size
§21.7.4 Including or excluding font tags
§21.7.5 Managing font tags for symbol fonts
§21.7.6 Excluding face and size attributes from font tags
§21.7.7 Accommodating browser font-rendering differences
> 21 Mapping text formats to HTML/XML > 21.7 Mapping fonts