在main.js中， 全局引用index.styl????import 'common/stylus/index.styl';index.styl中引用了幾個stylus，包括mixin.styl????@import "./mixin"????@import "./icon"????@import "./base"但是在組件App.vue中，還是要引用一遍stylus文件????@import "./common/stylus/mixin.styl"????mixin.styl中定義了????????border-1px($color) ?????????????position: relative ?????????????&:after ? ?????????????position: absolute ? ?????????????display: block ? ?????????????left: 0 ? ?????????????bottom: 0 ? ?????????????width: 100% ? ?????????????border-top: 1px solid $color ? ?????????????content: ' '把main.js的import 'common/stylus/index.styl';刪除也不影響效果以上路徑均無問題，是我對全局引用的理解錯了還是哪里寫錯了，求教?。?