Window scroll: Give me fine grained scrolling

[keybounce]

Right now, scrolling a window does a jump-scroll, that *pretends* to be smooth and little by little. But it wants to jump something like 6 lines at a time, and not give me any finegrain control.

What I want fine-grain control for: When reading a story online, I adjust the size of the window so that the text of the story is as close to my eye's "intake size" as possible. I adjust so that the top of the text is where the top of the viewing region is, and the size of the window is such that page-down does not move that line on the next page (i.e. -- the pagedown leaves the next page's topline at the same pixel point as the previous page's topline).

This means that I want to put that line I want to start reading from right at the top of the reading zone.

Chrome lets me do this without any issue. I can move things single-pixel.

Firefox wants to jump-scroll, making it impossible to get the text aligned where I'm reading.

[Jon]

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[Jon]

Potentially similar idea here: Implement smoother scrolling 

[keybounce]

Ok, I tried to read that post, and I cannot figure out what it is saying.

Right now, we have "smooth scrolling", in that you see it move a few pixels at a time.

**BUT IT MOVES IN BIG JUMPS**

Approximately 160 vertical pixels *per scroll*!

I want to be able to scroll *a single pixel*

Not to see 160 smooth little jumps.