Vulcan/packages/telescope-theme-base/lib/client/scss/specific/_notifications.scss

.notification-item{
  margin-bottom: 10px;
}

.notifications-menu.dropdown-accordion{
  .dropdown-contents{
    max-height: 0px;
  }
  .show-more{
    margin-top: -1px;
  }
  &.dropdown-has-items .show-more{
    display: block; // show the "show more" button if the dropdown has any items
  }
}