Elements of my site get larger when scrolling on mobile site within Instagram

I have my new website in the bio link of my instagram account. Once clicked and loading within the instagram browser, the first element below the header on each page seems to get bigger when you scroll down. It's the gallery on the home page, on other pages it's the header text.

I have seem some other discussions posting about this, but there doesn't seem to be a found solution yet. I have seem some folks post some CSS to help fix it, so any help would be appreciated!

Having this exact problem as well...haven't found solution...