diff --git a/src/components/knockGold/index.less b/src/components/knockGold/index.less
index e98d8418..33d030ef 100644
--- a/src/components/knockGold/index.less
+++ b/src/components/knockGold/index.less
@@ -121,7 +121,7 @@
 
 	/*说明*/
 	.coupon_explain {
-		width: 100%;
+		width: 375px;
 		text-align: center;
 		padding: 0 15px;
 		box-sizing: border-box;