Making it match the real thing... Well, more so than before...

src/app/app.scss

@@ -65,3 +65,18 @@ ion-title {
     }
   }
 }
+
+@media screen and (min-width: 769px) {
+  body {
+    background-color: #000000;
+  }
+
+  ion-app.app-root {
+    height: 0;
+    margin: 50% auto auto 50%;
+    max-width: 320px;
+    padding-bottom: 66.666%;
+    position: relative;
+    transform: translate3d(-50%, -50%, 0);
+  }
+}