index.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>animated switch using html and css only</title>
    <link rel="stylesheet" href="./style.css">
</head>

<body>
    <div id="container">
        <label for="checkbox">
            <input type="checkbox" id="checkbox">
            <div></div>
        </label>
    </div>
</body>

</html>