PUBLIC MARKS from decembre with tag "Firefox Quantum"

Firefox 57 or Stylish 3.0 users: - Expand the "Show CSS Code" panel - Copy/paste into a userChrome.css file. More information on creating a userChrome.css file:

This extension makes easier to use more profiles in Firefox and Thunderbird. This extension will not be compatible with Firefox versions > 52, due to the changes decided by Mozilla in extensions support with Firefox. Alternative : In firefox 57 or quantum you open a new tab, write about:profiles and manages your profile

Edit this file and copy it as userChrome.css into your ff profile