diff --git a/src/sku/index.less b/src/sku/index.less
index d04f15442..601bd1f94 100644
--- a/src/sku/index.less
+++ b/src/sku/index.less
@@ -194,6 +194,7 @@
             position: absolute;
             top: 0;
             right: 0;
+            z-index: 3;
             width: 18px;
             height: 18px;
           }