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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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