HTML and CSS Reference
style tag in a heading, but the browser will probably override and ignore
its effect in lieu of the heading tag.
4.5.18. Combining Physical Styles
You will probably have better luck combining physical tags than you
might have combining content-based tags to achieve multiple effects.
For instance, all the popular browsers render the following in bold and
<b><i>Thar she blows!</i></b>
Other browsers may elect to ignore such nesting. The standards require
the browser to "do its best" to support every possible combination of
styles, but do not define how the browser should handle such combina-
tions. Although most browsers make a good attempt at doing so, do not
assume all combinations will be available to you.