.v-data-table>.v-data-table__wrapper>table>thead>tr:first-child>th:first-child{border-bottom:thin solid rgba(0,0,0,.12)}.border-l{border-left:thin solid rgba(0,0,0,.12)}.border-r{border-right:thin solid rgba(0,0,0,.12)}.border-t{border-top:thin solid rgba(0,0,0,.12)}.border-b{border-bottom:thin solid rgba(0,0,0,.12)}