@tarojs/components/dist/collection/components/tabbar/style/index.css

Taro 组件库

html,
body {
  height: 100%;
}

:root {
  --taro-tabbar-height: 50px;
}

#app {
  height: 100%;
}

.taro-tabbar__border-white::before {
  border-top-color: #fff !important;
}
.taro-tabbar__container {
  display: flex;
  overflow: hidden;
  flex-direction: column;
  height: 100%;
}
.taro-tabbar__panel {
  overflow: auto;
  position: relative;
  flex: 1;
  -webkit-overflow-scrolling: auto;
}
.taro-tabbar__tabbar {
  position: relative;
  width: 100%;
  height: var(--taro-tabbar-height);
  transition: bottom 0.2s, top 0.2s;
}
.taro-tabbar__tabbar-top {
  top: 0;
}
.taro-tabbar__tabbar-bottom {
  bottom: 0;
  margin-bottom: constant(safe-area-inset-bottom);
  margin-bottom: env(safe-area-inset-bottom);
}
.taro-tabbar__tabbar-hide {
  display: none;
}
.taro-tabbar__tabbar-slideout {
  top: -52px;
  flex: 0 0;
}
.taro-tabbar__panel + .taro-tabbar__tabbar-slideout {
  top: auto;
  bottom: -52px;
}