.q-table__middle{max-height:400px}tr:first-child th{position:-webkit-sticky;position:sticky;top:0;opacity:1;z-index:2}tr:first-child th:first-child{z-index:3}td:first-child{z-index:1}td:first-child,th:first-child{position:-webkit-sticky;position:sticky;left:0}