Text becomes smaller when I rotate iPad

I have sections with text blocks in Paragraph 1 format. It looks fine on my iPad in landscape orientation. But when I rotate to portrait, the text shrinks dramatically. If I refresh the page, it is fine. Anything I can do to prevent this.  Thx. 

Hi,

Can you share link to page where you have problem?

It's on several pages. Here is one

https://brass-endive-883l.squarespace.com/xxxiii-2023-gila-wilderness

Thanks for taking a look

Thank you. The text looks fine..

On your screenshots, the text is much smaller in Portrait mode. Does it return to a larger size when you refresh the page? Here are screenshots from my iPad; one in landscape with normal text, one after rotating to portrait with much smaller text, and then after refresh, a return to normal size. 

Try use this code to set fixed size for paragraph (Website > Website Tools > Custom CSS)

p {
    font-size: 1rem !important;
}

Thanks. Unfortunately, that didn’t change anything.