Refactored and cleaned up

public/js/game.js

@@ -0,0 +1,22 @@
+const app = new PIXI.Application({
+    autoResize: true,
+    resolution: devicePixelRatio,
+    backgroundColor: 0x0073db
+});
+document.getElementById('game').appendChild(app.view);
+
+
+// -------------------------------------- code --------------------------------------
+
+// ------------------------------------ end code ------------------------------------
+
+
+// Resize (Do Not modify)
+window.addEventListener('resize', resize);
+
+function resize() {
+    let game = document.getElementById('game');
+    app.renderer.resize(game.offsetWidth, game.offsetHeight);
+}
+
+resize();