views_nivo_slider.css in Views Nivo Slider 7

.views-nivo-slider {
  background: transparent url(img/loading.gif) no-repeat 50% 50%;
}

.views-nivo-slider img {
  position: absolute;
  top: 0px;
  left: 0px;
}

.views-nivo-slider a {
  border: 0;
  display: block;
}