detailed_exer.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>Exercise Detailed</title>
    <link rel="stylesheet" href="./CSS/exercise_detailed.css">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
</head>

<body>
    <header id='header'>

    </header>

    <script src="./scripts/exercise_detailed.js" type="module"></script>
</body>

</html>