GIF image added to my Adobe Portoflio becomes invisible

I uploaded a GIF to act as a clickable link to view another page on my portfolio, as I have done 3 other times previously without issue. Except this time, the GIF disappeared when I left the page and only the caption is visible. When I published the site, (Under the “COMMERCIAL” page), the gif is invisible, yet still clickable. The “SHORT FILM” page has examples of how the GIF should function, and I’ve uploaded and formatted this new GIF on the “COMMERCIAL” page the same way I did the other ones but for some reason this one won’t show up.

My portfolio link: https://julianbarnes334.myportfolio.com/work