by J W.
It works fine in the browser on my device, just not in the Moodle app:
Here is an example:
Responsive code:
<script src="//my.visme.co/visme.js"></script><div class="visme_d" data-url="q6rr986e-untitled-project" data-w="1366" data-h="768" data-domain="my"></div><p style="font-family: Arial; font-size: 10px; color: #333333">Created using <a href="https://www.visme.co/presentation-software/" target="_blank" style="color: #30a0ea"><strong>Visme</strong></a>. Free Online Presentation Software.</p>
Fixed code:
<iframe src="//my.visme.co/embed/q6rr986e-untitled-project" height="768" width="1366" style="border: 0px;" webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe><p style="font-family: Arial; font-size: 10px; color: #333333">Created using <a href="https://www.visme.co/presentation-software/" target="_blank" style="color: #30a0ea"><strong>Visme</strong></a>. Free Online Presentation Software.</p>