Center and tighten up spacing to images on AV Masonry

http://www.wired4soundhavasu.com/wired-on-water/

Would like to center text and tighten up the spacing so it’s closer to the respective image. You’d given me this code for another site and I verified it is AV Masonry 1, but CSS doesn’t work.

#av-masonry-1 h3.av-masonry-entry-title.entry-title {
font-weight: normal !important;
text-align:center; }

#av-masonry-1 .av-masonry-entry-content.entry-content {
font-weight: normal !important;
text-align:center !important; }