BODY {
    font-family: Verdana,Arial,Helvetica;
    font-size:12px;
    margin:0;
    padding:0;
    text-align:center;
    color: black;
    background: white;
}
#contenido {
    width: 770px;
    margin: 0 auto;
    text-align: left;
    overflow: hidden;
}
#main {
    float: left;
    width:460px;
    overflow: hidden;
    padding: 5px;
    }
#left {
    width: 150px;
    float:left;
    overflow: hidden;
}
#right {
    width: 150px;
    float:left;
    overflow: hidden;
}