body{background-color:#eee}thead,tbody,tr,td,th{display:block}tr:after{content:' ';display:block;visibility:hidden;clear:both}thead th{height:30px}tbody{overflow-y:auto}tbody td,thead th{float:left}tbody td:first-of-type,thead th:first-of-type{width:100px}tbody td:last-of-type,thead th:last-of-type{width:calc(100% - 100px)}div#warn{display:none;position:fixed;z-index:10000;top:0;right:0;bottom:0;left:0;background-color:red;animation:warn 0.5s linear 2s infinite alternate}@keyframes warn{from{opacity:0}to{opacity:1}}