The BIG element defines big text, and the SMALL element defines small text.
<big>larger text</big>
<small>smaller text</small>
This can be specified with CSS. Please see the "Related Document" for details on CSS.
<p>Normal text</p> <p><big>Larger text</big></p> <p><small>Smaller text</small></p>
Normal text
Larger text
Smaller text