.tab1, .tab2, .tab3,.tab4 {
    font:bold 12px/22px arial,helvetica,sans-serif;
    color:#fff;
    background-color:#025287;
    border:1px solid #fff;
    border-bottom:1px solid #2bb34b;
    padding:3px 15px; ;
    cursor:pointer;
}
.tab1:hover, .tab2:hover, .tab3:hover, .tab4:hover {
    color:#fff;
    background-color:#2bb34b;
}

#spec_sheet {
    width:436px; height:720px; overflow:auto;;
    border-top:5px solid #d1d1d1;
    padding:12px;
}