diff --git a/src/style/hairline.less b/src/style/hairline.less
index 512193b7e..30048fb0c 100644
--- a/src/style/hairline.less
+++ b/src/style/hairline.less
@@ -7,6 +7,7 @@
 }
 
 .van-hairline {
+  &,
   &--top,
   &--left,
   &--right,