调整样式

pages/index/index.less

@@ -15,6 +15,7 @@
         z-index: 2;
 
         .icon {
+            margin-bottom: 12rpx;
             width: 187rpx;
             height: 164rpx;
         }

pages/index/index.wxml

@@ -4,7 +4,7 @@
     <!-- 一级分类 -->
     <view class="firstClassify">
         <image wx:for="{{categoryList}}" wx:key="id" data-item='{{item}}' bindtap="jumpChildClassify" class="icon"
-            src="/static/n2t.png" />
+            src="{{item.icon}}" />
         <image bindtap="showTips" class="icon" src="/static/future.png" />
     </view>
     <!-- 资源 -->

pages/index/index.wxss

@@ -15,6 +15,7 @@
   z-index: 2;
 }
 .recommend .firstClassify .icon {
+  margin-bottom: 12rpx;
   width: 187rpx;
   height: 164rpx;
 }

pages/ranking/index.less

@@ -186,8 +186,7 @@
             margin: 80rpx auto;
             text-align: center;
             font-size: 34rpx;
-            .nullImg {
-                margin-bottom: 20rpx;
+                 margin-bottom: 20rpx;
                 width: 223rpx;
                 height: 176rpx;
             }