the ＞＞＞ and /deep/ combinators have been deprecated. Use :deep() instead 样式穿透/deep

1. 组件内scoped的样式，样式穿透/deep/只写在外层父元素，父元素内部的子元素不再写/deep/

<style scoped>
 /deep/.van-tabs__nav{
    .van-tab{
        &.van-tab--active .van-tab__text{
            font-weight: bold;
        }
    }
    .van-tabs__line{
            background: #8A51FE!important;
        }
}
</style>

报错：the >>> and /deep/ combinators have been deprecated. Use :deep() instead

2. /deep/已弃用 使用:deep()

:deep(.van-tabs__nav){
    .van-tab{
        &.van-tab--active .van-tab__text{
            font-weight: bold;
        }
    }
    .van-tabs__line{
            background: #8A51FE!important;
        }
}