优化

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src/pages/demo/components/countup/index.vue

@@ -1,5 +1,5 @@
 <template>
-  <d2-container type="card" class="page">
+  <d2-container type="card" class="page-demo-components-countup">
     <template slot="header">数字动画组件</template>
     <el-row :gutter="20">
       <el-col :span="6">
@@ -76,7 +76,7 @@ export default {
 
 <style lang="scss" scoped>
 @import '~@/assets/style/public.scss';
-.page {
+.page-demo-components-countup {
   .el-card {
     @extend %unable-select;
     .group {

src/pages/demo/playground/page-argu/get.vue

@@ -1,5 +1,5 @@
 <template>
-  <d2-container type="card">
+  <d2-container>
     <h1 class="d2-mt-0">$route.params.username: {{$route.params.username}}</h1>
     <h1>$route.query.userid: {{$route.query.userid}}</h1>
     <p>你可以尝试返回发送数据页面修改数据重新发送，或者切换到其它页面后刷新浏览器再返回本业观察参数保留</p>

src/pages/demo/playground/page-argu/send.vue

@@ -1,5 +1,5 @@
 <template>
-  <d2-container type="card">
+  <d2-container>
     <el-form :model="sendForm" :rules="rules" label-position="top" ref="sendForm">
       <el-form-item label="username 通过动态路由匹配发送" prop="username">
         <el-input v-model="sendForm.username"></el-input>