discourse/app/assets/stylesheets/desktop/header.scss

// --------------------------------------------------
// Discourse header
// --------------------------------------------------

.d-header {
  left: 0;
  z-index: 1000;
  padding-top: 3px;
  .fa-home {
    padding-right: 3px;
    padding-top: 3px;
  }
  .current-username {
    a {
      display:block;
      margin-top: 10px;
    }
  }
}

/* needs to be global, used in user-drop down and user page too */
.unread-private-messages {
  background-color: $success;
}

#main {
  position: relative;
}

#main-outlet {
  padding-top: 82px;
}

// Dropdowns
// --------------------------------------------------

.d-dropdown {
  width: 320px;
  overflow: auto;
  // Common

  .heading {
    border-top: 1px solid scale-color-diff();
  }

  // Categories

  .category {
    line-height: 20px;
  }

  .btn {
    padding: 2px 8px;
    margin-bottom: 2px;
    .fa {
      margin-right: 5px;
    }
  }
}