index.html

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>login & register</title>
    <!-- import css file -->
    <link rel="stylesheet" href="/css/style.css">
    <!-- import icon css -->
    <link href='https://unpkg.com/boxicons@2.1.4/css/boxicons.min.css' rel='stylesheet'>
</head>

<body>

    <div class="container">
        <form action="#">
            <h1>login</h1>

            <div class="input-box">
                <input type="text" placeholder="username">
                <i class='bx bx-user'></i>
            </div>

            <div class="input-box">
                <input type="password" placeholder="password">
                <i class='bx bx-lock-alt'></i>
            </div>

            <button class="submit-btn" type="submit">login</button>

            <div class="btnn">
                <a href="#">you have accunt ?</a>
                <a href="#">forgot password</a>
            </div>
        </form>
    </div>

    <!-- import script -->
    <script src="./js/script.js"></script>
</body>

</html>