Scrolling email form disappears? HELP

I currently have an animation on my site where there’s an email sign up that disappears as you scroll down and reappears if you scroll up. Works fantastic on desktop but on mobile when you actually click in the form block to enter email it auto scrolls down which makes the input disappear so you can’t see what you’re typing… I am not sure how to find a work around for this. Basically we want an email sub to be easily accessible but not take over the aesthetic of the site having it there constantly.

Here is my public share link: [LINK]1
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