vant/lib/tabbar-item/index.css

:root,:host{--van-tabbar-item-font-size: var(--van-font-size-sm);--van-tabbar-item-text-color: var(--van-text-color);--van-tabbar-item-active-color: var(--van-primary-color);--van-tabbar-item-active-background: var(--van-background-2);--van-tabbar-item-line-height: 1;--van-tabbar-item-icon-size: 22px;--van-tabbar-item-icon-margin-bottom: var(--van-padding-base)}.van-tabbar-item{display:flex;flex:1;flex-direction:column;align-items:center;justify-content:center;color:var(--van-tabbar-item-text-color);font-size:var(--van-tabbar-item-font-size);line-height:var(--van-tabbar-item-line-height);cursor:pointer}.van-tabbar-item__icon{margin-bottom:var(--van-tabbar-item-icon-margin-bottom);font-size:var(--van-tabbar-item-icon-size)}.van-tabbar-item__icon .van-icon{display:block}.van-tabbar-item__icon .van-badge{margin-top:var(--van-padding-base)}.van-tabbar-item__icon img{display:block;height:20px}.van-tabbar-item--active{color:var(--van-tabbar-item-active-color);background-color:var(--van-tabbar-item-active-background)}