Issue with scaling

I’m having a simple issue where scaling my website to a certain size means that the text starts to disappear/becomes scaled improperly to the top of the page. I like the text and the button on the home page are fixed until it gets down to a certain size, but how can I make some sort of threshold to make it eventually scale down with the top? Basically, I need a min distance to the top of the image to where it begins to move down as the website gets smaller.

Here is my website:

Here is my site Read-Only: LINK
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