fix: elementPlus样式适配

src/main.ts

@@ -4,6 +4,7 @@ import App from './App.vue'
 import router, { registerDynamicRoutes } from './router'
 import router, { registerDynamicRoutes } from './router'
 import store from './store'
 import store from './store'
 import './styles/index.scss'
 import './styles/index.scss'
+import 'element-plus/es/components/message/style/css'
 import roleShow from './utils/roleShow'
 import roleShow from './utils/roleShow'
 import VxeUITable from 'vxe-table'
 import VxeUITable from 'vxe-table'
 import 'vxe-table/lib/style.css'
 import 'vxe-table/lib/style.css'
@@ -46,5 +47,4 @@ app
   .use(VxeUITable)
   .use(VxeUITable)
   .mount('#app')
   .mount('#app')
 
 
-
 app.config.globalProperties.$isPermissionBtn = isPermissionBtn
 app.config.globalProperties.$isPermissionBtn = isPermissionBtn

src/styles/element.scss

@@ -45,3 +45,23 @@
 .el-loading-mask {
 .el-loading-mask {
   z-index: 1020 !important;
   z-index: 1020 !important;
 }
 }
+
+/* ElMessage：兼容 Vite 预构建旧版 JS（无 is-center）与新版 CSS 的定位差异 */
+.el-message {
+  left: 50%;
+  transform: translateX(-50%);
+}
+.el-message.is-left {
+  left: 16px;
+  right: auto;
+  transform: none;
+}
+.el-message.is-right {
+  left: auto;
+  right: 16px;
+  transform: none;
+}
+.el-message.is-center {
+  left: 50%;
+  transform: translateX(-50%);
+}