feat:添加编译css插件

sample-form-client-ui/admin/package.json

@@ -46,6 +46,7 @@
     "filemanager-webpack-plugin": "^8.0.0",
     "less": "^4.0.0",
     "less-loader": "^8.0.0",
+    "postcss-cssnext": "^3.1.1",
     "svg-sprite-loader": "^4.1.6",
     "vue-template-compiler": "^2.6.14"
   }

sample-form-client-ui/admin/postcss.config.js

+const cssnext = require("postcss-cssnext");
+module.exports = {
+  plugins: [cssnext],
+};

sample-form-client-ui/admin/vue.config.js

@@ -2,7 +2,7 @@ const { defineConfig } = require("@vue/cli-service");
 const FileManagerPlugin = require("filemanager-webpack-plugin"); // 压缩文件夹
 const isDev = process.env.NODE_ENV === "development";
 let plugins = [];
-// 避免打本地启项目时自动打zip包
+// 避免本地启项目时自动打zip包
 if (!isDev) {
   plugins.push(
     new FileManagerPlugin({