This page gives you some details on how to embed the MFJ widget in your site.
The easiest approach is to add the following code to your site:
<script async src="https://www.measuresforjustice.org/widget.js"></script>
This will result in the following widget appearing on your site.
This widget is responsive and will lay out on screens as narrow as 260px wide. This will support iPhone 5 and above.
The widget.js file simply places an iframe in the div and sets the source to
Alternatively, you can add your own iframe to your page with src set to
https://www.measuresforjustice.org/widget.html. This gives your more control over the layout on your page.
<iframe width='100%' height='704px'