Usability: Stop jumping arrow

Story: As a user I want to read on the page without being distracted

Problem: The arrow is permanently jumping

I assume the arrow is there to indicate scrolling, which might be needed since the background is always filling the viewport after load

Possible solutions:

1. Do away with the arrow and just make the viewport filling green background 20px less high. The change of color will be enough in triggering scrolling.
2. Do switch the "fill viewport" feature off
3. Do not use a jumping arrow. A static one will do. Bonus: Make it actually scroll down on click, avoiding the confusion if it indicates that one should scroll or if it should be clicked.