table{width:100%;height:100%}thead{display:table;width:calc(100% - 1em);table-layout:fixed}tbody tr,thead tr{display:table;width:100%;table-layout:fixed;text-align:left}thead,tbody{border:1px solid black}table tr:nth-child(odd){background-color:#fff}table tr:nth-child(2n){background-color:#e1e1e1}