.jumbotron-ad #newsletter {
   .btn {
     color: @jumbotron-color;
     border-color: mix(@jumbotron-color, @jumbotron-bg, 75%);
     background-color: transparent;
     text-shadow: 0 1px 0 rgba(0,0,0,0.15);
     &:hover {
       background-color: mix(@jumbotron-color, @jumbotron-bg, 95%);
       border-color: mix(@jumbotron-color, @jumbotron-bg, 95%);
       color: @jumbotron-bg;
       text-shadow: 0 -1px 0 @jumbotron-color;
     }
   }
 }