Hi @kentsmythe,
Thanks for contacting us! Unfortunately you can’t use custom CSS with oEmbeds because these display content directly from Instagram within an Iframe on the page. For security reasons, the browser won’t apply CSS or JavaScript to content within an Iframe.
The Custom CSS setting in our plugin will work for content in a regular Instagram feed because that is added as HTML directly on your page, rather than as an Iframe.
I hope this makes sense, and if I can help with any other questions, please let me know.
Thanks!
Louis
Got it. Thanks for the answer.