diff --git a/example/pages/checkbox/index.wxml b/example/pages/checkbox/index.wxml
index f78df7ed..c148ea74 100644
--- a/example/pages/checkbox/index.wxml
+++ b/example/pages/checkbox/index.wxml
@@ -84,6 +84,7 @@
         wx:for="{{ list }}"
         wx:key="{{ index }}"
         title="复选框{{ item }}"
+        value-class="value-class"
         clickable
         data-name="{{ item }}"
         bind:click="toggle"
diff --git a/example/pages/checkbox/index.wxss b/example/pages/checkbox/index.wxss
index 4ed6d7b4..3d2c6fa8 100644
--- a/example/pages/checkbox/index.wxss
+++ b/example/pages/checkbox/index.wxss
@@ -6,6 +6,10 @@
   margin: 10px 0 0 20px;
 }
 
+.value-class {
+  flex: none !important;
+}
+
 .icon {
   width: 20px;
 }