修改scroll滚动条

src/stage/index/style/DownloadScene.less

@@ -110,7 +110,7 @@
 		margin-left: 0.38rem;
 		display:block;
 		height: 7.39rem;
-    	overflow: scroll;
+    	overflow: auto;
 
 		.scroll-lines-wrapper{
 			z-index: 1;