Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

reduce sidebar width

  • 2 replies
  • 1 has this problem
  • 2 views
  • Last reply by neilmccann

more options

i am on windows 7 starter (on another machine). am trying to reduce the width of sidebar. i have created a userChrome.css text file in :users/username/appdata/roaming/mozilla/firefox/profiles/ voop2qcn.default. the file contains this text:

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* set default namespace to XUL */ #sidebar {min-width: 0px !important; max-width: none !important;}

it does not seem to work (i cannot see a chrome directory). any ideas as to what i am doing wrong? thanks

i am on windows 7 starter (on another machine). am trying to reduce the width of sidebar. i have created a userChrome.css text file in :users/username/appdata/roaming/mozilla/firefox/profiles/ voop2qcn.default. the file contains this text: @namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* set default namespace to XUL */ #sidebar {min-width: 0px !important; max-width: none !important;} it does not seem to work (i cannot see a chrome directory). any ideas as to what i am doing wrong? thanks

Modified by neilmccann

Chosen solution

You now have to create the "chrome" directory yourself as a folder within your profile, such is progress (not).

FWIW, it works fine it will not reduce smaller than the [X] close button in the upper right corner of the sidebar. But I would find it quicker to simply use "Ctrl+B", "Ctrl+H" to toggle on/off the Bookmarks/History sidebars and readjust them if necessary rather reduce for not using and enlarge for active use.

I converted all of my userChrome.css to styles which I use with the "Stylish" extension. Before such extensions as "Restartless Restart" and "Quick Restart" exiting and restarting Firefox was really a bottleneck. But by using Stylish you can test immediately and be shown where the error is. Stylish does not use userChrome.css which was a pain when you have the equivalent of 30 styles, I more than that now, and try to find an error nested in there somewhere. With Stylish I can use styles as building blocks.

So while the examples for userChrome.css and userContent.css are gone along with the "chrome" folder (but can still be created and used), there are thousands of styles to choose from which really makes things easier.


Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

Read this answer in context 👍 0

All Replies (2)

more options

Chosen Solution

You now have to create the "chrome" directory yourself as a folder within your profile, such is progress (not).

FWIW, it works fine it will not reduce smaller than the [X] close button in the upper right corner of the sidebar. But I would find it quicker to simply use "Ctrl+B", "Ctrl+H" to toggle on/off the Bookmarks/History sidebars and readjust them if necessary rather reduce for not using and enlarge for active use.

I converted all of my userChrome.css to styles which I use with the "Stylish" extension. Before such extensions as "Restartless Restart" and "Quick Restart" exiting and restarting Firefox was really a bottleneck. But by using Stylish you can test immediately and be shown where the error is. Stylish does not use userChrome.css which was a pain when you have the equivalent of 30 styles, I more than that now, and try to find an error nested in there somewhere. With Stylish I can use styles as building blocks.

So while the examples for userChrome.css and userContent.css are gone along with the "chrome" folder (but can still be created and used), there are thousands of styles to choose from which really makes things easier.


Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

Modified by David McRitchie

more options

many thanks. created chrome directory and it worked.