This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

How to apply a user style with the Stylish extension for Web Developer Tools?

  • 2 replies
  • 2 have this problem
  • 24 views
  • Last reply by kosmos890

kosmos890
kosmos890
more options

I have firefox 27 and the fonts of Web Developer Tools (Inspector, Debugger..) are very small. The fonts of Stylish editor are very small also.

Here https://support.mozilla.org/en-US/questions/943857 I found a similar question. GingerBread Man said  : 

"If you need to modify anything else, you can use the DOM Inspector extension to examine user interface elements ("chrome"). "

My problem is that I can't find the names of elements e.g "chrome://browser/content/devtools/markup-view.xhtml"

I have firefox 27 and the fonts of Web Developer Tools (Inspector, Debugger..) are very small. The fonts of Stylish editor are very small also. Here https://support.mozilla.org/en-US/questions/943857 I found a similar question. GingerBread Man said : "If you need to modify anything else, you can use the DOM Inspector extension to examine user interface elements ("chrome"). " My problem is that I can't find the names of elements e.g "chrome://browser/content/devtools/markup-view.xhtml"

All Replies (2)

the-edmeister
the-edmeister
  • Moderator
more options

See if this works.
chrome://browser/skin/devtools/markup-view.css

kosmos890
kosmos890 Question owner
more options

@the-edmeister

Thanks for your reply.

The rule below affects only Inspector 

@namespace url(http://www.w3.org/1999/xhtml);
   @-moz-document url("chrome://browser/content/devtools/markup-view.xhtml") {
       .devtools-monospace {
         font-size: 120% !important;
       }
   }

I change the rule as you suggest. 

@-moz-document url("chrome://browser/skin/devtools/markup-view.css") { ......}

It doesn't work.