The recommended way to install user styles is to use Firefox with Stylish.
If you already have Firefox with Stylish, make sure this site is allowed to run JavaScript.
You've installed this user style in Stylish. To uninstall it, open the Tools menu, choose Add-ons, click the User Styles panel on the top, click on the entry for this user style, and click Uninstall.
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You've installed this user style in Stylish. To uninstall it, open the Tools menu, choose Stylish, and remove the entry from there.
You've installed this user style in Stylish, but a newer version is available.
To uninstall this user style, open the Tools menu, choose Add-ons, click the User Styles panel on the top, click on the entry for this user style, and click Uninstall.
Like customizing Firefox? Customize your new tabs with New Tab King.
The recommended way to install this user style is to .
Wikipedia : Delete the languages you don't understand anyway. If you're like me, you only know four languages, so the others in wikipedia's list are useless to you. This stylesheet Fades them. It is based on Wikipedia - Delete languages, which really removes them instead of making them lighter. (Which you might want instead, or you can even combine them, delete most languages, fade out some, but show your mother tongue)