Created
          September 11, 2018 22:53 
        
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    Firefox Customization - userContent.css
  
        
  
    
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  | @-moz-document regexp("moz-extension://.+/resources/group-tab.html.*") { | |
| :root { | |
| background: #bbc2cf; | |
| } | |
| } | 
  
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