Gap in HTML CSS JS Tabs Options

[valtam]

I can't for the life of me, find where I've gone wrong with my code.

I'm making it so that our Donators page isn't so long to scroll by having clickable tabs.



The current issue is that with each tab, the gap grows larger between the heading and the displayed donors names.



Does anyone know why this is happening? Thank you.

Source page - https://www.linuxliteos.com/dotest.html