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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Login</title>
    
    <style>
        body {
            background-color: black;
        }
        .login-container {
            max-width: 500px;
            margin: 5rem auto;
            padding: 2rem;
            background-image: linear-gradient(red, pink, purple, violet);
            border: 3px solid peru;
            text-align: center;
            height: 400px;
        }
    
        .login-container h2 {
            margin-bottom: 1rem;
        }
    
        .login-container input {
            margin-bottom: 1rem;
            padding: 0.5rem;
            border: 4px solid rgb(20, 2, 20);
            width: 400px;
        }

        #username, #password {
            margin-top: 40px;
        }
    
        #buttonnn {
            width: 150px;
            color: white;
            background-color: black;
            font-size: 20px;
            font-weight: 200;
        }
    </style>

    <script>
        function validateForm() {
            var username = document.getElementById('username').value;
            var password = document.getElementById('password').value;

            if (username === "" || password === "") {
                alert("Username and password must not be empty!");
                return false;  // Prevent form submission
            }

            return true;  // Allow form submission
        }
    </script>
</head>
<body>
    <div class="login-container">
        <h2>Login</h2>
        <form action="main.html" method="post" onsubmit="return validateForm()">
            <input type="text" id="username" name="username" placeholder="username">
            <input type="password" id="password" name="password" placeholder="password">
            <button type="submit" id="buttonnn">Log In</button>
        </form>
    </div>
</body>
</html>
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