Merge branch 'dev' of https://gitcode.net/dcloud/hello-uni-app-x into dev

pages/API/preview-image/preview-image.uvue

@@ -20,9 +20,9 @@
       </view>
       <view style="background-color: white">
         <text class="text-desc">点击图片开始预览</text>
-        <view class="cell-ct" style="background-color: #eeeeee; padding: 8px">
+        <view class="cell-ct" style="margin: 8px;">
           <view class="cell cell-choose-image" v-for="(image, index) in imageList" :key="index">
-            <image style="width: 105px; height: 105px" mode="aspectFit" :src="image" @click="previewImage(index)">
+            <image style="width: 100px; height: 100px" mode="aspectFit" :src="image" @click="previewImage(index)">
             </image>
           </view>
           <image class="cell cell-choose-image" src="/static/plus.png" @click="chooseImage">
@@ -104,9 +104,10 @@
   }
 
   .cell {
-    margin-left: 7px;
-    width: 105px;
-    height: 105px;
+    margin-left: 3px;
+    margin-right: 3px;
+    width: 100px;
+    height: 100px;
   }
 
   .cell-choose-image {

pages/CSS/layout/z-index.uvue

@@ -22,6 +22,10 @@
       <view class="common" style="background-color: blue;top: -75px;left: 175px;">
         <text>z-index: 0</text>
       </view>
+      <view class="common fixed" style="background-color: chocolate;top: 250px;left: 175px;z-index: -1;">
+        <text>position: fixed</text>
+        <text>z-index: -1</text>
+      </view>
     </view>
   </view>
 </template>