Here is something that seems to be like you want :
Fiddle : http://jsfiddle.net/CzVhk/
CSS [extract] :
#accordion a{
margin-left:50px;
}
#accordion div{
margin-left:50px;
}
#accordion a:first-child{
margin-left:0px;
}
#accordion a:first-child + div{
margin-left:0px;
}
HTML :
<div id="accordion">
<a href="#one" class="first">Recent Posts</a>
<div id="one">
this is some info.
</div>
<a href="#two">Popular Posts</a>
<div id="two">
this is some more info.
</div>
<a href="#three">Archived Posts</a>
<div id="three">
this is even more info.
</div>
<a href="#four">Archived Posts</a>
<div id="four">
this is even more info.
</div>
</div>