I'm creating my first website. I'm using Claude to write Next.js code, and I'm deploying it on Vercel. First time using Claude or Vercel. I had the domain on Siteground, but I moved it to Vercel. Claude is saying that my domain configuration in Vercel is correct (screenshot attached).

My site appears normally on my desktop and laptop, but on my phone the screen is out of whack (screenshot attached) when I do a Google search for my site or type it in to a browser.

I've refreshed the domain in Vercel several times and waited 48 hours to check to see if the problem was resolved, but it has not.

Claude suggested reaching out to Vercel if the problem persists, so would someone please tell me how I can fix this? Thanks!