First function is colorful rgb scroller(next to standard scroolbar), which indicates progress of page scroll. Second one is a classic scroll to top button.

I have a table over which I need to be able to scroll vertically as a whole. In this table there are 2 columns over which I need to be able to scroll horizontally (individually).
But the 2 horizontal scrollbars disappear at the bottom of the table because of the vertical scrollbar.