This is the form made in astro file:

import Layout from "../layouts/Layout.astro";

<Layout title="Iniciar Sesión">

    <section>
        <form action="/services/submit" class="form" method="post">
            <input type="text" name="username" placeholder="Nombre de usuario" required>
            <input type="password" name="pass" placeholder="Contraseña" required>
            <input type="submit">
        </form>
    </section>

</Layout>