<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Single Player Pong</title> <style> body { display: flex; justify-content: center; align-items: center; margin: 0; background: black; height: 100vh; overflow: hidden; } canvas { border: 2px solid white; } </style> </head> <body> <canvas id="pong"></canvas> <script> const canvas = document.getElementById('pong'); const ctx = canvas.getContext('2d'); // Set canvas size to fit the screen canvas.width = window.innerWidth * 0.9; ...