What are some best practices for creating visually appealing and user-friendly login forms in PHP applications?

Creating visually appealing and user-friendly login forms in PHP applications involves using clean and responsive design, clear instructions, and proper validation for user input. It is important to provide helpful error messages, utilize secure password hashing techniques, and consider implementing features like password strength meters or social login options to enhance user experience.

<form action="login.php" method="post">
    <label for="username">Username:</label>
    <input type="text" id="username" name="username" required>
    
    <label for="password">Password:</label>
    <input type="password" id="password" name="password" required>
    
    <button type="submit">Login</button>
</form>