<form action="" method="post">
    <h2>Identifiez-vous</h2>
    <dl>
        <dt>
            <label for="username">Nom d'utilisateur</label>
        </dt>
        <dd>
            <input type="text" id="username" name="username" value="<?php
                echo htmlspecialchars($username);
            ?>" />
            <?php if (isset($errors["username"])) : ?>
            <p class="error"><?php echo $errors["username"]; ?></p>
            <?php endif; ?>
        </dd>
        <dt>
            <label for="password">Mot de passe</label>
        </dt>
        <dd>
            <input type="password" id="password" name="password" />
            <?php if (isset($errors["password"])) : ?>
            <p class="error"><?php echo $errors["password"]; ?></p>
            <?php endif; ?>
        </dd>
    </dl>
    <p><input type="submit" value="Connexion" /></p>
</form>