Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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.

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

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

Closing tabs creates a gap between tabs.

  • 3 àwọn èsì
  • 2 ní àwọn ìṣòro yìí
  • 1 view
  • Èsì tí ó kẹ́hìn lọ́wọ́ cor-el

more options

Hello. I'm try to customize the look and feel of FF by editing the userChrome.css.

I almost got it, but there is one problem which i can't resolve.

After closing a tab with a number greater that 40 ,there are always unfilled place left between tabs. Pls. see the image.

This is what i added to userChrome.css. Please help me to resolve the issue.

  DISABLE FIREFOX DEFAULT BACKGROUND  

#TabsToolbar:not(:-moz-lwtheme)::after {
	display: none;
}


/*===============================================
  INACTIVE TABS  
  ===============================================*/
#TabsToolbar .tabbrowser-tab {
	text-align: left!important;
	-moz-border-top-colors: none !important;
	-moz-border-left-colors: none !important;
	-moz-border-right-colors: none !important;
	-moz-border-bottom-colors: none !important;
	background: #BAB9A8 !important;
	border-top: 1px solid #4F4E47!important;
	border-bottom: 1px solid #4F4E47!important;
	border-left: 1px solid #4F4E47!important;
	border-right: 1px solid #4F4E47!important;
	border-radius: 3px 3px 0px 0px !important;
	color: #000000 !important;
	/*margin: 0px 3px 0px 2px !important;*/
	font-family: "Ubuntu",Helvetica,Arial,sans-serif;
	font-size: 11px;
        max-width: 43px !important;
        min-width: 40px !important;
}

/*===============================================
  ACTIVE TABS  
  ===============================================*/
#TabsToolbar .tabbrowser-tab[selected] {
	font-weight: normal !important;
	border-top: 1px solid #000!important;
	border-left: 1px solid #000!important;
	border-right: 1px solid #000!important;
	border-radius: 3px 3px 0px 0px !important;
	background: #F0E68C !important;
	color: #000000 !important;
}

/*===============================================
  DISABLE AUSTRALIS TAB  
  ===============================================*/
#TabsToolbar .tab-background {
	margin: 0;
	background: transparent;
}

#TabsToolbar .tab-background-start,  #TabsToolbar .tab-background-end {
	display: none !important;
}

#TabsToolbar .tab-background-middle {
	background: transparent !important;
}

#TabsToolbar .tabbrowser-tab:after,  #TabsToolbar .tabbrowser-tab:before {
	display: none !important;
}
Hello. I'm try to customize the look and feel of FF by editing the userChrome.css. I almost got it, but there is one problem which i can't resolve. After closing a tab with a number greater that 40 ,there are always unfilled place left between tabs. Pls. see the image. This is what i added to userChrome.css. Please help me to resolve the issue. <pre><nowiki> DISABLE FIREFOX DEFAULT BACKGROUND #TabsToolbar:not(:-moz-lwtheme)::after { display: none; } /*=============================================== INACTIVE TABS ===============================================*/ #TabsToolbar .tabbrowser-tab { text-align: left!important; -moz-border-top-colors: none !important; -moz-border-left-colors: none !important; -moz-border-right-colors: none !important; -moz-border-bottom-colors: none !important; background: #BAB9A8 !important; border-top: 1px solid #4F4E47!important; border-bottom: 1px solid #4F4E47!important; border-left: 1px solid #4F4E47!important; border-right: 1px solid #4F4E47!important; border-radius: 3px 3px 0px 0px !important; color: #000000 !important; /*margin: 0px 3px 0px 2px !important;*/ font-family: "Ubuntu",Helvetica,Arial,sans-serif; font-size: 11px; max-width: 43px !important; min-width: 40px !important; } /*=============================================== ACTIVE TABS ===============================================*/ #TabsToolbar .tabbrowser-tab[selected] { font-weight: normal !important; border-top: 1px solid #000!important; border-left: 1px solid #000!important; border-right: 1px solid #000!important; border-radius: 3px 3px 0px 0px !important; background: #F0E68C !important; color: #000000 !important; } /*=============================================== DISABLE AUSTRALIS TAB ===============================================*/ #TabsToolbar .tab-background { margin: 0; background: transparent; } #TabsToolbar .tab-background-start, #TabsToolbar .tab-background-end { display: none !important; } #TabsToolbar .tab-background-middle { background: transparent !important; } #TabsToolbar .tabbrowser-tab:after, #TabsToolbar .tabbrowser-tab:before { display: none !important; } </nowiki></pre>
Ìsopọ̀ yíyà aṣàfihàn

Ti ṣàtúnṣe nípa snoRNA

Ọ̀nà àbáyọ tí a yàn

Maybe try the Classic Theme Restorer to see if that works and check the CSS code that this extension uses. The styling of the Tab bar is quite complicated and may also not be stable across releases.

Ka ìdáhùn ni ìṣètò kíkà 👍 3

All Replies (3)

more options

I've called the big guys to help you. Good luck.

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options)
key, and then starting Firefox. Is the problem still there?

more options

Thanks! There is no problem in safe mode, because the userChrome.css doesn't get populated in safe mode. However if i delete all the extensions(also if i do "refresh firefox") the problem doesn't go away. As soon as i add the userChtome.css the problem is back. Therefore my userChrome.css is not correct, but i don't know there and why.

more options

Ọ̀nà àbáyọ Tí a Yàn

Maybe try the Classic Theme Restorer to see if that works and check the CSS code that this extension uses. The styling of the Tab bar is quite complicated and may also not be stable across releases.