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README.md

@@ -6,6 +6,8 @@ Keep in mind CSS code can not create entirely new items, buttons or toolbars. It
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 <h2>Where to find Firefox profile folder and what is the correct location for user styles?</h2></br>
+<b>All OS</b></br>
+<code>about:support > Profile Folder > Open Folder</code></br>
 <b>1.</b> Find your profile folder ('profile names are different for everyone').</br>
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 <b>Windows</b></br>