edgarluque.com/templates/shortcodes/sponsor.html

<p><iframe src="https://github.com/sponsors/edg-l/button" title="Sponsor edg-l" height="32" width="114"
        style="border: 0; border-radius: 6px; display: inline-block; vertical-align: middle;"></iframe>
    <a href="https://liberapay.com/edgl/donate">
        <img style="display: inline-block; vertical-align: middle;" alt="Donate using Liberapay"
            src="https://liberapay.com/assets/widgets/donate.svg">
    </a>
</p>