diff --git a/src/pages/course/video.module.scss b/src/pages/course/video.module.scss
index c6b13e6..8c91805 100644
--- a/src/pages/course/video.module.scss
+++ b/src/pages/course/video.module.scss
@@ -57,7 +57,7 @@
 
     .video-box {
       width: 100%;
-      padding-bottom: calc(9 / 16 * 100%);
+      padding-bottom: calc(9 / 16 * 50%);
       margin: 0 auto;
       border-radius: 8px;
       position: relative;