diff --git a/simulator/src/ui/app.ts b/simulator/src/ui/app.ts
index fbc335e..5f8e8b6 100644
--- a/simulator/src/ui/app.ts
+++ b/simulator/src/ui/app.ts
@@ -50,8 +50,8 @@ export class App extends LitElement {
         }
 
         canvas {
-            width: 100%;
-            height: 100%;
+            flex: 1;
+            max-width: 100%;
             object-fit: contain;
             image-rendering: pixelated;
             image-rendering: crisp-edges;