html table斑马表格，一行灰一行白交替的效果

table样式

._table{width: 100%; border-collapse: collapse; border:0px;}
._table thead tr {font-size: 13px; color: #2e3b45;  text-align: center; background-color: rgba(230, 255, 250, 0.92); font-weight:bold;}
._table td{line-height: 20px; text-align: center; padding: 4px 10px 3px 10px; height: 18px;border: 0px solid #ffffff;}
._table tbody tr {background: #fff; font-size: 13px; color: #393939;}
._table tbody tr:nth-child(2n){ background: #f3f3f3;}