CSS not displaying properly

[tmv105]

I can't figure out why my liquid layout approach is working with one of my rows and not for my other. Here is the css I'm using...it works for the row3col1 and row3col2, but not for the row2col1ycaaa and the row2col2ycaas(here it doesn't float my information.

#row2col1ycaaa
{
margin-top: 10px;
float: left;
width: 48%;
}
#row2col2ycaaa
{
margin-top: 10px;
float: left;
margin-left: 3%;
width: 48%;
}
#row3col1
{
margin-top: 10px;
float: left;
width: 25%;
}
#row3col2
{
margin-top: 10px;
float: left;
margin-left: 3%;
width: 48%;
}

Now here's my html:

<br class="clearboth" />
<div class="spacer">&nbsp;</div>
<div id="row2co11ycaaa">
<h3><a href="<A href="http://www.psu.edu/bulletins/bluebook/courses/ist/420.htm">IST">http://www.psu.edu/bulletins/bluebook/courses/ist/420.htm">IST 420</a> &amp; <a href="<A href="http://www.psu.edu/bulletins/bluebook/courses/ist/421.htm">IST">http://www.psu.edu/bulletins/bluebook/courses/ist/421.htm">IST 421:</a><br />
York County Area Agency on Aging</h3>
<p>These courses provide an understanding of the
&quot;business processes and information value chain&quot;
within a system and foster an understanding of the
role of IT in system integration.
</p>
</div>
<div id="row2col2ycaaa">
<img src="../images/ycaaa1.jpg" alt="YCAAA &amp; PSY" width="310" height="150" />
</div>

<br class="clearboth" />
<div class="spacer">&nbsp;</div>
<div id="row3col1">
<img id="photo2" src="../images/paaaa.jpg" alt="Elderly Man and Woman" width="175" height="130" />
</div>
<div id="row3col2">
<p>York County Area Agency on Aging (<a target="_blank" href="<A href="http://www.ycaaa.org">YCAAA</a>)promotes">http://www.ycaaa.org">YCAAA</a>)promotes the independence of older adults through education, advocacy and
coordination of community-based services. The primary
commitment of the agency is to deliver quality services to older
adults with the greatest social or economic needs; as resources
allow, the agency may serve others with similar characteristics.</p>
</div>

Any ideas what's going on?

[tmv105]

oops, I had a '1' instead of an 'l'....sorry. Noticed it when I posted the thread, not noticeable in text editor.

[MidiMagic]

Please use code tags when posting code. Your code hid behind the ads.