.tabs {
  display: flex;
  background-color: #fff;
  font-size: 14px;
  color: #666;
}

.tab-item {
  width: 33.33%;
  text-align: center;
  height: 44px;
  line-height: 44px;
  position: relative;
}
.tab-item[data-active=true] {
  color: var(--primary-color);
}
.tab-item[data-active=true]::before {
  display: block;
  content: '';
  height: 3px;
  width: 36%;
  background-color: var(--primary-color);
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}