Fix WhatsApp button issue on website made with vercel/github react framework next.js developer

I have a website made using GitHub/vercel. Link is www.thejerseydistrict.com. Right now the WhatsApp button is on the bottom right which I like but instead of it popping up and covering half of the mobile phones screen, I’d like it to only be a small button on the right side and that’s it. Quick fix shouldn’t take too long.