Using Safari Version 11.1, whenever I open the web inspector on a web page, all media queries in the CSS stop working. If I close the inspector, the problem goes away. This happens on any site.

Are other people experiencing this? Is there a setting that I've toggled?

Any help would be much appreciated! Thanks.

2 Answers 2


Probably you enabled "Force Print Media Styles" (a small printer icon in the upper right corner under the Elements tab): Force Print Media Styles

  • Oh my, you saved my life!! Thanks so much, I would never have spotted that. Aug 20, 2018 at 16:51

I also have experienced this problem. After doing some research I finally manage to solve the problem.

Backup and remove ~/Library/WebKit/com.apple.Safari folder.

A problem should disappear after that operation. Enjoy :D

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .