StackExchange top bar, minimal

.topbar {
  background-color: #ffffff !important;
}
.topbar-icon:hover, .topbar-icon-on:hover, .profile-me:hover, .topbar-menu-links a:hover  {
    background-color: #ddd !important;
    color: #999 !important;
  }
.topbar-icon, .topbar-icon-on  {
   width: 30px !important;
   opacity: 0.6;
  }