#unit_container {
width: 769px;
height: auto;
margin-top: 10px;
float: left;
background: #000000 url(http://www.expresspowersport.com/images/full/full_main_bg.jpg) repeat-x;
}

#exp_unit_box {
float: left;
width: 581px;
height: autopx;
background: url(http://www.expresspowersport.com/images/full/content_stripe_bg.png);
border: 1px solid #b8b8b8;
text-align: left;
margin-left: 93px;
margin-top: 20px;
}