样式优化

common/styles/global/pages.scss

@@ -732,8 +732,9 @@
 		}
 	.course-title{color: #fff;font-size: 36rpx;margin-right: auto;margin-left: 10rpx;}
 	.course-play-btn{
-		width: 142rpx;height: 52rpx;flex-shrink: 0;
-		@include ezy-no-repeat-cover;background-image: url("@/static/images/course/video-play1.png");}
+		width: 162rpx;height: 54rpx;
+		flex-shrink: 0;
+		@include ezy-no-repeat-cover;background-image: url("@/static/images/course/video-play.png");}
 }	
 
 // 课程得分页面