no message

Former-commit-id: a8eedd7adb445496ea8c379c44d345177e48ba7e
Former-commit-id: ee9798c5c6e9aec53895e9c83f605ce5052321c2
Former-commit-id: 4b13e4bf2f99ca15163fdc85eae32c561d55d3bc

src/pages/demo/plugins/mock/ajax.vue

@@ -4,7 +4,7 @@
       <div slot="header">
         <el-button @click="ajax">发送请求</el-button>
       </div>
-      <el-table v-bind="table" style="width: 100%" class="dd-mb">
+      <el-table v-bind="table" style="width: 100%" class="d2-mb">
         <el-table-column
           v-for="(item, index) in table.columns"
           :key="index"

src/pages/demo/plugins/mock/components/MockDemoCard.vue

@@ -1,9 +1,9 @@
 <template>
-  <el-card class="dd-mb">
-    <div slot="header" class="dd-clearfix">
+  <el-card class="d2-mb">
+    <div slot="header" class="d2-clearfix">
       <el-button type="text" size="mini">{{title}}</el-button>
       <el-tooltip content="重新 mock 数据" placement="top-end">
-        <el-button type="primary" size="mini" @click="$emit('reload')" class="dd-fr">刷新</el-button>
+        <el-button type="primary" size="mini" @click="$emit('reload')" class="d2-fr">刷新</el-button>
       </el-tooltip>
     </div>
     <el-row :gutter="10">

src/pages/demo/plugins/mock/dpd.vue

@@ -1,6 +1,6 @@
 <template>
   <Container type="ghost">
-    <el-card class="dd-mb">
+    <el-card class="d2-mb">
       <PageHeader
         slot="header"
         title="数据占位符"

src/pages/demo/plugins/mock/dtd.vue

@@ -1,6 +1,6 @@
 <template>
   <Container type="ghost">
-    <el-card class="dd-mb">
+    <el-card class="d2-mb">
       <PageHeader
         slot="header"
         title="数据模板"