diff --git a/web/kiri/engine.html b/web/kiri/engine.html
index 40b62df6..5a54167a 100644
--- a/web/kiri/engine.html
+++ b/web/kiri/engine.html
@@ -31,12 +31,17 @@
             margin-right: 1rem;
         }
         #jcode, #gcode {
-            width: 400px;
             height: 400px;
             margin: 5px;
             border-radius: 3px;
             border: 1px solid #aaa;
         }
+        #jcode {
+            width: 500px;
+        }
+        #gcode {
+            width: 300px;
+        }
         #jcode, #gcode {
             display: flex;
             flex-direction: column;