table{width:90%;margin:auto;background:#444}
div{margin:5vh 0;max-width:100%;overflow-x:auto}
th,td{border:1px solid black}
tr{height:10vw;background:#999}
th{background:#777;font-size:4vh}
td{padding:1%}
td a{text-decoration:none;color:blue}
@media screen and (max-width:770px) {
    table{width:700px}}