BTW, the above shortcode is not something that is officially part of this theme and hence you will find that the hover on the images is aligned right. Will need some custom CSS to fix this (assuming that you are wrapping the above shortcode within a div with id – #circular-portfolio) –
#circular-portfolio .image-info { width: 100%; height: 100%; }
#circular-portfolio .image-info .image-info-buttons { right: 50%; margin-right: -12px; }
#circular-portfolio .image-info .terms { margin: 0 auto; top: 20%; text-align: center; }