diff --git a/05 KanoColle-UI/src/components/Main.astro b/05 KanoColle-UI/src/components/Main.astro
index 6b729523..c42c4686 100644
--- a/05 KanoColle-UI/src/components/Main.astro	
+++ b/05 KanoColle-UI/src/components/Main.astro	
@@ -111,7 +111,7 @@ import Song from "./Song.astro";
 
     @media screen and (max-width: 800px) {
         section {
-            width: calc(100vw - 5rem);
+            width: calc(100vw - 3rem);
         }
     }
 </style>
\ No newline at end of file