Rated 5 out of 5 stars

Пожалуйста доработайте для Mozilla 57v .

This review is for a previous version of the add-on (1.5.9). 

Use custom CSS code for Firefox 57+ ( https://github.com/Aris-t2/CustomCSSforFx/issues/2 ) to keep classic ui features or switch to Waterfox browser ( https://www.waterfoxproject.org/ ) or Basilisk browser ( http://www.basilisk-browser.org/ ) to keep classic add-ons.