diff --git a/styles/globals.css b/styles/globals.css
index 5a663cfc2..7d37ee5ad 100644
--- a/styles/globals.css
+++ b/styles/globals.css
@@ -41,7 +41,7 @@ a {
 
 #__next {
   min-width: 340px;
-  max-width: 600px;
+  max-width: 400px;
 
   min-height: 100dvh;
   margin: 0 auto;
diff --git a/styles/variable.css b/styles/variable.css
index fb2a6ce96..9d925659d 100644
--- a/styles/variable.css
+++ b/styles/variable.css
@@ -1,5 +1,5 @@
 :root {
-  --max-width: 600px;
+  --max-width: 400px;
 
   --gray-800: #424242;
   --gray-700: #616161;