diff --git a/src/button/demo/index.vue b/src/button/demo/index.vue
index 8b59cd48b..3f8651384 100644
--- a/src/button/demo/index.vue
+++ b/src/button/demo/index.vue
@@ -141,6 +141,8 @@ export default {
 @import '../../style/var';
 
 .demo-button {
+  background: @white;
+
   .van-button {
     &--large {
       margin-bottom: @padding-md;