Removed unnecessary CSS code of copied tooltip

client/components/cards/cardDetails.styl

@@ -198,12 +198,8 @@ avatar-radius = 50%
           padding: 0px 5px
 
     .copied-tooltip
-      display: none
       margin-right: 10px
       padding: 10px;
-      background-color: #000000df;
-      color: #fff;
-      border-radius: 5px;
 
   .card-description textarea
     min-height: 100px