Why is there space located above the tabs in Firefox 31.0?

Why are there empty space at the top above the tabs and the address bar and minimize fullscreen and close the icons at the top right? Restored the default without impact theme, change seems to happen on FF 31 update.

Try the negative margin top for the bar tab (#TabsToolbar) with the code to userChrome.css

Add code to the file userChrome.css below default @namespace.

@namespace url("https://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

#TabsToolbar {margin-top:-1px!important}

The file userChrome.css (UI) customization and userContent.css (Web sites) are located in the folder of chrome in the Firefox profile folder.

Tags: Firefox

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