I want to override one sentence on a page of my website. I think the code is
<font face="your font" size="your size #" color="#your color number"></font>

But for some reason, my computer is mean, and it won't change it.
All I want is the size of one sentence to be a little bit smaller than everything else. This page is going to be located in an frame on my website.
So how would I fix this?

A better way might be to do it with CSS...
<style type="text/css">
.small { font-family: yourfont; font-size: smallsize; color: #000000; }
</style>
Then
<span class="small">small text here</span>