.section ul 
{
    list-style:none; 
    margin:0; 
    padding:0; 
}
.section ul li 
{
    margin:0; 
    padding:0; 
}
.section
{
    width:5000px; 
    position:relative; 
}

.section .sub 
{
    float: left;
    position: relative;
    width:500px; 
    height:650px; 
    background:#FFF;
}