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How to remove toolbar button?

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Hi! Using about:config and adding a couple of lines of codes to userchrome css and usercontent css I managed to remove the calendarbutton, the tasks button aswell as the chat button from the spaces toolbar on the left. I really want to to the same with the hide toolbar for tabs menu button furthest down on the page, how do I do that? Another thing I really also would like to do is stop the contacts button from opening a new page, instead I think it should just switch from the email page to the contact one, not open a new. Is there any way of doing this?

Really gratefull if I can get some help with this! Thanks!

Hi! Using about:config and adding a couple of lines of codes to userchrome css and usercontent css I managed to remove the calendarbutton, the tasks button aswell as the chat button from the spaces toolbar on the left. I really want to to the same with the hide toolbar for tabs menu button furthest down on the page, how do I do that? Another thing I really also would like to do is stop the contacts button from opening a new page, instead I think it should just switch from the email page to the contact one, not open a new. Is there any way of doing this? Really gratefull if I can get some help with this! Thanks!

Chosen solution

The spaces toolbar collapse button can be hidden with css:

button#collapseButton.spaces-toolbar-button{display: none !important;}


Help/Troubleshooting Info, Profile Folder, Open Folder, close TB, create a new folder named chrome, create a new document in chrome with a text editor, name it userChrome.css, Save as type: All files *.*, copy in the above code. Double-click toolkit.legacyUserProfileCustomizations.stylesheets to true in Settings/General/Config. editor, restart TB.

Online css generator

video on how to create a css file (Firefox and TB)

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Perhaps post a screenshot of the 'toolbar for tabs menu button'.

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Chosen Solution

The spaces toolbar collapse button can be hidden with css:

button#collapseButton.spaces-toolbar-button{display: none !important;}


Help/Troubleshooting Info, Profile Folder, Open Folder, close TB, create a new folder named chrome, create a new document in chrome with a text editor, name it userChrome.css, Save as type: All files *.*, copy in the above code. Double-click toolkit.legacyUserProfileCustomizations.stylesheets to true in Settings/General/Config. editor, restart TB.

Online css generator

video on how to create a css file (Firefox and TB)

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Thank you very much!