perf[style]: use webpack alias instead of hard code src path (#1338)

Author: samuelchlui

src/components/Upload/singleImage3.vue

@@ -83,7 +83,7 @@ export default {
 </script>
 
 <style rel="stylesheet/scss" lang="scss" scoped>
-@import "src/styles/mixin.scss";
+@import "~@/styles/mixin.scss";
 .upload-container {
   width: 100%;
   position: relative;

src/views/example/components/ArticleDetail.vue

@@ -234,7 +234,7 @@ export default {
 </script>
 
 <style rel="stylesheet/scss" lang="scss" scoped>
-@import "src/styles/mixin.scss";
+@import "~@/styles/mixin.scss";
 .createPost-container {
   position: relative;
   .createPost-main-container {

src/views/layout/Layout.vue

@@ -48,7 +48,7 @@ export default {
 </script>
 
 <style rel="stylesheet/scss" lang="scss" scoped>
-  @import "src/styles/mixin.scss";
+  @import "~@/styles/mixin.scss";
   .app-wrapper {
     @include clearfix;
     position: relative;