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Inexplicable black line appearing over my tab?

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My firefox updated to the (horrible) new tabs, and now there's an incredibly annoying black line that appears over my Facebook tab that I can't find any way to get rid of. What does this mean? What is it for? How do I kill this stupid thing? With the (terrible) way the new tabs distinguish between the active tab and the inactive tabs (basically just a slightly different, nearly indistinguishable shade of off-white), this black bar is the most striking visual element on my row of tabs, so it grabs the eye the way the active tab should, and it's confusing and distracting.

附加的畫面擷圖

被選擇的解決方法

Do you have the Facebook Container addon?

從原來的回覆中察看解決方案 👍 1

所有回覆 (3)

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選擇的解決方法

Do you have the Facebook Container addon?

有幫助嗎?

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A number of users have said that the container color line moving from the bottom of the tab to the top of the tab is more distracting. I'm not aware of a built-in way to modify the position, shape, or length of this line, but possibly custom style rules in a userChrome.css file (a community-supported workaround) might help. There's an active subreddit for hacking Firefox's interface with style rules here where you might find more guidance:

https://www.reddit.com/r/FirefoxCSS/

有幫助嗎?

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Thanks guys, that's fixed me, apparently it was the Facebook Container addon that was adding that annoying line.

有幫助嗎?

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