.flickr-image span.flickr-cc,
.flickr-image span.flickr-copyright {
  display: none;
}

.flickr-image:hover .flickr-image span.flickr-cc,
.flickr-wrap:hover .flickr-image span.flickr-cc,
.flickr-image:hover .flickr-image span.flickr-copyright,
.flickr-wrap:hover .flickr-image span.flickr-copyright {
  z-index: 100;
  display: inline;
}