tabbar 示例修正

pages/template/custom-tab-bar/custom-tab-bar.uvue

@@ -19,7 +19,7 @@
         </view>
       </view>
       <view>
-        <image class="concave-image" src="/static/template/custom-tab-bar/concave.png"></image>
+        <image class="concave-image" mode="heightFix" src="/static/template/custom-tab-bar/concave.png"></image>
       </view>
       <view class="tab-item" @click="onTabClick(1)">
         <view ref="tab-item2" class="tab-item-content">
@@ -132,7 +132,6 @@
   }
 
   .tab-bar {
-    background-color: #1e90ff;
     flex-direction: row;
     height: 56px;
     overflow: visible;
@@ -173,7 +172,6 @@
   }
 
   .concave-image {
-    width: 100px;
     height: 56px;
   }