https://www.youtube.com/watch?v=_YvFkNIfMis #gallery-3 { margin: auto; } #gallery-3 .gallery-item { float: left; margin-top: 10px; text-align: center; width: 33%; } #gallery-3 img { border: 2px solid #cfcfcf; } #gallery-3 .gallery-caption { margin-left:...