feat: dark mode

Vben

2021-04-07 5b8eb4a49a097a47caf491c44df427522ab58daa

 src/views/demo/page/desc/basic/index.vue

@@ -93,6 +93,6 @@
<style lang="less" scoped>
  .desc-wrap {
    padding: 16px;
    background: #fff;
    background: @component-background;
  }
</style>