Mystery Padding

I’ve got some extra padding in my comment boxes and I can’t figure out how to adjust it. I’ve messed around with margins and padding to no avail. Here’s a page for example.

Here’s the comment CSS
.commentlist {padding:0px;}
.commentlist li {border:1px solid #D9E2DA; border-radius:10px; -moz-border-radius:10px; -webkit-border-radius:10px; margin-bottom:10px; padding:0px;}
.commentlist li li {margin-left:20px; margin-bottom:10; padding:0px;}
.commentlist li ul li {width:500px; background-color: #D9E2DA; border:1px solid #e5e4e2; padding:0px; }
.commentlist li ul li ul li {width:480px; background-color: white; padding:0px; }

.commentlist li .avatar
{
float:left;
border: 1px solid #000;
padding: 2px;
margin:6;
background: #000;

}

.commentlist li cite
{
font-size:1.2em;
font-weight:bold;
font-style:normal;

}

#commentform textarea
{
width: 100%;
}