Firefox reader mode: real black background, columns & custom width
Firefox has the new reader mode (about:reader) to facilitate reading of (almost) any article in a simple, pleasant, constant style. However, the width of the article view is remarkably thin for a single column. Meh... change. This styles allows to customize the width of the view but also to use a layout with more than a single column, making it more akin to a newspaper.
This style based on style 114669 by user 13655. It adds the feature to choose other colors for the dark background mode - where I prefer
#000000 as a real dark black.
This also works on Firefox for Android and is usable for AMOLED devices, where the
#000000 black looks really nice and saves energy.
Userstyles.org config: https://i.imgur.com/VgTvZwJ.png