手机端样式细节调整，补充测试用例 (#3)

* unit test

* picker and dialog unit tes

* fix:quantity and loading

docs/examples-dist/quantity.vue

@@ -7,7 +7,7 @@
 
               </example-block><example-block title="高级用法">
                 <van-quantity v-model="quantity2" min="5" max="40" step="2" default-value="9"></van-quantity>
-<p class="curr-quantity">当前值：{{ quantity2 }}</p>
+<p class="curr-quantity">当前值：{{ quantity2 || 9 }}</p>
 
               </example-block></section></template>
 <style>

docs/examples-docs/quantity.md

@@ -83,7 +83,7 @@ export default {
 :::demo 高级用法
 ```html
 <van-quantity v-model="quantity2" min="5" max="40" step="2" default-value="9"></van-quantity>
-<p class="curr-quantity">当前值：{{ quantity2 }}</p>
+<p class="curr-quantity">当前值：{{ quantity2 || 9 }}</p>
 ```
 :::
 

docs/src/ExamplesApp.vue

@@ -83,6 +83,10 @@ export default {
     height: 100%;
   }
 
+  body {
+    font-family: 'Helvetica Neue',Helvetica,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',SimSun,sans-serif;
+  }
+
   .examples-container {
     height: 100%;
     overflow: auto;
@@ -117,6 +121,7 @@ export default {
 
   .demo-sub-title {
     font-size: 14px;
+    font-weight: normal;
     color: #999;
     padding: 30px 15px 10px;
   }

docs/src/components/demo-list.vue

@@ -44,6 +44,7 @@ export default {
     .zanui-desc {
       text-align: center;
       font-weight: normal;
+      user-select: none;
     }
 
     .zanui-title {