How to show the gate further down in the post? v2

Continuing on from the closed topic How to show the gate further down in the post?

I can make the gate appear lower down the page (not using the code snippets in the old topic, which didn’t work for me) but it just means that the content (starting with “This area is for members only”) doesn’t all fit onto the screen.

Is there a way to reduce the size of the gate from 50% to about 20% and have the writing smaller or less, so that it fits in?