.main #list{
        text-align: center;
        width: 90%;
        height: 100%;
        margin: 0 auto ;
}

.main #list #item_thumb{
        width: 25%;
        height: 100%;
        margin: 20px 0 0 0;
        float: left;
        display: inline;
}

.main #list #item_thumb img.frame{
        padding: 2px;
        border: 1px solid #cccccc;	
}