See also: https://forum.obsidian.md/t/adjustable-readable-line-length/7564/6
Note: For this to work the "readable line length" property in settings has to be enabled in settings (as expected).
700px
is the default width, just adjust the number below.
Pixels px
(or percentage %
) are possible units that enable a width independent from the number of characters
(good when adjusting the zoom level or font size). For fixed amount of characters use rem
, e.g. 70rem
@GafferMan : There you go (last paragraphs): https://help.obsidian.md/How+to/Add+custom+styles
Just go to your settings ->appearance. There you can click on a folder icon which brings you to a directory where you can add your custom css files. Don't forget to enable them in the settings afterwards.