diff --git a/docs/.vuepress/styles/index.styl b/docs/.vuepress/styles/index.styl
index 53629337..9abb758d 100644
--- a/docs/.vuepress/styles/index.styl
+++ b/docs/.vuepress/styles/index.styl
@@ -9,6 +9,7 @@
   .demo-video
     width: 100%
     margin: 50px 0
+    border-radius: 6px
 
 #main-title
   display: none