How to drag and drop a div inside another div – Blancer.com Tutorials and projects

I have the following HTML code, which creates a div called “paddle” inside a div called “board”. I’m preparing a small game of Pong and the “paddle” div represents the paddle that will receive the ball.

<!DOCTYPE html>
<html lang="pt-br">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Pong Game</title>
    <link rel="stylesheet" href="estilo.css">
    <script src="script.js"></script>
</head>
<body>
    <div id="board">
        <div id="paddle"></div>
    </div>
</body>
</html>

#board {
    margin: 0 auto;
    background-color: black;
    border-top: 5px solid skyblue;
    border-bottom: 5px solid skyblue;
    width: 500px;
    height: 500px;
    position: relative;
}

#paddle {
    background-color: skyblue;
    width: 10px;
    height: 50px;
    position: absolute;
    top: 250px;
    left: 480px;
    cursor: pointer;
}

I need you to help me with a JavaScript code that Drags and Drops the “paddle” div within the limits of the “board” div and only vertically