antd-mobile/2x/cjs/components/tab-bar/tab-bar.css

<img src="https://gw.alipayobjects.com/mdn/rms_ee68a8/afts/img/A*hjjDS5Yy-ooAAAAAAAAAAAAAARQnAQ" alt="logo" width="100%" />

.adm-tab-bar-wrap {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-start;
  align-items: stretch;
  overflow: hidden;
  min-height: 100px;
}

.adm-tab-bar-item {
  flex: 1;
  color: var(--adm-color-weak);
  white-space: nowrap;
  padding: 8px 16px;
  width: min-content;
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.adm-tab-bar-item-icon {
  font-size: 40px;
  height: 44px;
  line-height: 1;
  margin: 8px 0 2px;
}

.adm-tab-bar-item-title {
  font-size: 22px;
  line-height: 30px;
}

.adm-tab-bar-item-active {
  color: var(--adm-color-primary);
}

.adm-tab-bar-icon-badge {
  --top: 12px;
}

.adm-tab-bar-title-badge {
  --right: -4px;
  --top: -4px;
}