Thank you so much @creedon! It worked like a charm! How did you know which selector to use? I need to add a tik tok icon to another page too.
Only one more thing, I also have the social icons on my footer. The icons are inside a circle, but the whatsapp icon didn't seem to pick up on the same style. It is just plain white. Can you help me please? I'll attach an image so you see what I mean,