Pech gehabt, diese website gibt nix her!

html

<form action="send_sms.php" method="POST">

<label for="phone">Handynummer:</label>

<input type="text" id="phone" name="phone" required><br><br>

<label for="message">Nachricht:</label>

<textarea id="message" name="message" required></textarea><br><br>

<input type="submit" value="SMS senden">

</form>