#slideshow { width: 100%; height: auto; overflow: auto; padding: 0; margin: 0 }

.theme-default .nivo-controlNav.nivo-thumbs-enabled {
  text-align: center;
  position: absolute;
  top: 0; 
  left: 50% !important;
  margin: 260px 0 0 -350px !important;
}