vant-weapp/example/pages/tab/index.wxss

page {
  padding-bottom: 300px;
}

.content {
  padding: 20px;
  background-color: #fff;
}

.content-2 {
  padding: 20px;
}

.right-nav {
  padding: 0 10px;
  line-height: 44px !important;
}

.tab-class {
  transition: all 0.25s ease-in-out;
}

.tab-active-class {
  font-size: 1.05em !important;
}