Toggle FA icon?

Hi all,

Having trouble toggling this icon on my site:

I’d like it toggled when the expandportfolio section is expanded. I tried using .toggleClass() but to no avail.

Anyone got any ideas?


Do you have a demo you can share?

Not really a demo, but the website is live here:

And the repo is here:

What I am trying to do is flip the fa-chevron-down class to fa-chevron-up when the container is expanded, with jQuery or JavaScript.