diff --git a/rc-busness/assets/css/index.less b/rc-busness/assets/css/index.less
index c8465ce9..dee49787 100644
--- a/rc-busness/assets/css/index.less
+++ b/rc-busness/assets/css/index.less
@@ -241,7 +241,7 @@
 				width:100%;
 				height:100%;
 				background:url("../image/btn-play.png") center center no-repeat;
-				background-size:90px 90px;
+				background-size:48px 48px;
 				z-index:2;
 			}
 		}