diff --git a/src/app/globals.css b/src/app/globals.css
index efe06b6..afc34f5 100644
--- a/src/app/globals.css
+++ b/src/app/globals.css
@@ -314,5 +314,6 @@
 }
 
 .cm-editor {
+  width: 100%;
   height: 100%;
 }
diff --git a/src/app/run/page.tsx b/src/app/run/page.tsx
index 594ee56..e2c1107 100644
--- a/src/app/run/page.tsx
+++ b/src/app/run/page.tsx
@@ -76,11 +76,11 @@ export default function Run() {
             </div>
 
             {/* Code */}
-            <div className="flex-1 pl-0 md:pl-5 flex flex-col">
+            <div className="flex-1 w-full pl-0 md:pl-5 flex flex-col">
               <header className="text-sm font-medium text-muted-foreground flex items-center gap-1">
                 <File size={16} /> myfile.js
               </header>
-              <div className="flex-1 pt-3 pb-4 md:pb-5 h-full">
+              <div className="flex-1 pt-3 pb-4 md:pb-5 w-full h-full">
                 <Editor />
               </div>
             </div>