Site URL: https://www.campuspa.com/
If you visit the site on mobile, when you scroll down from the top of the page, the background image and header text "grows" a bit for the first ~1.5cm of scrolling before finalizing in a slightly larger size. It looks pretty messy and I can't figure out how to fix it. I thought it might have something to do with having a fixed header, but I tried changing the header settings to no avail.
Any suggestions greatly appreciated!