body { line-height: 1; background: #fff; }

.bb1 { border-bottom: 1px solid #d2d2d2; }

.tab_item_sty {
  display: inline-block;
  padding: .07rem 0;
  font-size: .26rem;
  color: #333;
  border-bottom: 1px solid transparent;
}

.current .tab_item_sty {
  font-weight: bold;
  color: #005884;
  border-bottom-color: #005884;
}