index.php

<!<!DOCTYPE html>
<html>
<head>
    <title>Apps Mail</title>
    <link rel="stylesheet" type="text/css" href="assets/css/style.css">
</head>
<body>
    <h1> Selamat datang di aplikasi Mail</h1>

    <?php
        if(isset($_GET['pesan'])){
            if($_GET['pesan']=="gagal"){
                echo "<div class='alert'> Username dan Password tidak sesuai</div>";
            }
        }
    ?>

    <div class="kotak_login">
        <p class="tulisan_login">Silahkan Login</p>

        <form action="cek_login.php" method="post">
            <label>Username</label>
            <input type="text" name="username" class="form_login" placeholder="Username..." required="required">

            <label>Password</label>
            <input type="text" name="password" class="form_login" placeholder="Password..." required="required">

            <input type="submit" class="tombol_login" value="Login">
            <br><br>
            <center><a class="link" href="index.php">Kembali</a></center>
        </form>
    </div>


</body>
</html>