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HTML 

              
                <!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="styles.css">
  <title>Pong Game</title>
</head>
<body>
  <canvas id="pongCanvas" width="800" height="400"></canvas>
  <script src="script.js"></script>
</body>
</html>
!

CSS 

              
                body {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #000; /* Set background color to black */
}

canvas {
  border: 1px solid #fff; /* Set border color to white */
  display: block;
  margin: auto;
  touch-action: manipulation;
}
!

JS 

              
                document.addEventListener("DOMContentLoaded", function () {
  const canvas = document.getElementById("pongCanvas");
  const ctx = canvas.getContext("2d");

  const paddleHeight = 60;
  const paddleWidth = 10;
  const ballRadius = 8;
  const initialBallSpeed = 5;

  const halfCanvasWidth = canvas.width / 2;

  let leftPaddleY = (canvas.height - paddleHeight) / 2;
  let rightPaddleY = (canvas.height - paddleHeight) / 2;
  let ballX = canvas.width / 2;
  let ballY = canvas.height / 2;
  let ballSpeedX = initialBallSpeed;
  let ballSpeedY = initialBallSpeed;
  let leftPlayerScore = 0;
  let rightPlayerScore = 0;

  function drawPaddle(x, y) {
    ctx.fillStyle = "#fff";
    ctx.fillRect(x, y, paddleWidth, paddleHeight);
  }

  function drawBall() {
    ctx.beginPath();
    ctx.arc(ballX, ballY, ballRadius, 0, Math.PI * 2);
    ctx.fillStyle = "#fff";
    ctx.fill();
    ctx.closePath();
  }

  function drawScore() {
    ctx.font = "30px Arial";
    ctx.fillStyle = "#fff";
    ctx.fillText(leftPlayerScore + " - " + rightPlayerScore, canvas.width / 2 - 30, 30);
  }

  function movePaddle(player, direction) {
    const paddleSpeed = 10;
    let paddleY;

    if (player === "left") {
      paddleY = leftPaddleY;
      if (direction === "up") {
        paddleY -= paddleSpeed;
      } else if (direction === "down") {
        paddleY += paddleSpeed;
      }
      if (paddleY < 0) {
        paddleY = 0;
      } else if (paddleY > canvas.height - paddleHeight) {
        paddleY = canvas.height - paddleHeight;
      }
      leftPaddleY = paddleY;
    } else if (player === "right") {
      paddleY = rightPaddleY;
      if (direction === "up") {
        paddleY -= paddleSpeed;
      } else if (direction === "down") {
        paddleY += paddleSpeed;
      }
      if (paddleY < 0) {
        paddleY = 0;
      } else if (paddleY > canvas.height - paddleHeight) {
        paddleY = canvas.height - paddleHeight;
      }
      rightPaddleY = paddleY;
    }
  }

  function update() {
    ballX += ballSpeedX;
    ballY += ballSpeedY;

    if (ballY - ballRadius < 0 || ballY + ballRadius > canvas.height) {
      ballSpeedY = -ballSpeedY;
    }

    if (
      ballX + ballRadius > canvas.width - paddleWidth &&
      ballY > rightPaddleY &&
      ballY < rightPaddleY + paddleHeight
    ) {
      ballSpeedX = -ballSpeedX;
    }

    if (
      ballX - ballRadius < paddleWidth &&
      ballY > leftPaddleY &&
      ballY < leftPaddleY + paddleHeight
    ) {
      ballSpeedX = -ballSpeedX;
    }

    if (ballX + ballRadius > canvas.width) {
      leftPlayerScore++;
      resetBall();
    } else if (ballX - ballRadius < 0) {
      rightPlayerScore++;
      resetBall();
    }
  }

  function resetBall() {
    ballX = canvas.width / 2;
    ballY = canvas.height / 2;
    ballSpeedX = initialBallSpeed;
    ballSpeedY = initialBallSpeed;
  }

  function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);

    // Draw the dividing line
    ctx.fillStyle = "#fff";
    ctx.fillRect(halfCanvasWidth - 2, 0, 4, canvas.height);

    // Draw the paddles and ball
    drawPaddle(0, leftPaddleY);
    drawPaddle(canvas.width - paddleWidth, rightPaddleY);
    drawBall();

    // Draw the score
    drawScore();
  }

  function gameLoop() {
    update();
    draw();
    requestAnimationFrame(gameLoop);
  }

  window.addEventListener("keydown", function (e) {
    e.preventDefault();

    if (e.key === "ArrowUp") {
      movePaddle("left", "up");
    } else if (e.key === "ArrowDown") {
      movePaddle("left", "down");
    }

    if (e.key === "w") {
      movePaddle("right", "up");
    } else if (e.key === "s") {
      movePaddle("right", "down");
    }
  });

  canvas.addEventListener("touchstart", function (e) {
    e.preventDefault();
    const touchY = e.touches[0].clientY - canvas.getBoundingClientRect().top;

    if (e.touches[0].clientX < halfCanvasWidth) {
      // Left side of the canvas
      if (touchY < canvas.height / 2) {
        movePaddle("left", "up");
      } else {
        movePaddle("left", "down");
      }
    } else {
      // Right side of the canvas
      if (touchY < canvas.height / 2) {
        movePaddle("right", "up");
      } else {
        movePaddle("right", "down");
      }
    }
  });

  canvas.addEventListener("touchmove", function (e) {
    e.preventDefault();
    const touchY = e.touches[0].clientY - canvas.getBoundingClientRect().top;

    if (e.touches[0].clientX < halfCanvasWidth) {
      // Left side of the canvas
      if (touchY < leftPaddleY + paddleHeight / 2) {
        movePaddle("left", "up");
      } else {
        movePaddle("left", "down");
      }
    } else {
      // Right side of the canvas
      if (touchY < rightPaddleY + paddleHeight / 2) {
        movePaddle("right", "up");
      } else {
        movePaddle("right", "down");
      }
    }
  });

  gameLoop();
});
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