.photonic-gallery { border: 1px solid #ccc; height: 300px; margin: 1em 0; text-align: center; }
.photonic-gallery .photonic-source { width: 256px; height: 256px; background: url(../images/Icons.svg) no-repeat; background-size: 100%; margin: 0 auto; }
.photonic-gallery-500px .photonic-source { background-position: 0 -2048px; }
.photonic-gallery-flickr .photonic-source { background-position: 0 -2304px; }
.photonic-gallery-instagram .photonic-source { background-position: 0 -2560px; }
.photonic-gallery-smugmug .photonic-source { background-position: 0 -2816px; }
.photonic-gallery-zenfolio .photonic-source { background-position: 0 -3072px; }
.photonic-gallery-wp .photonic-source { background-position: 0 -3328px; }
.photonic-gallery-picasa .photonic-source { background-position: 0 -3584px; }

.mce-content-body img.wp-media.wp-gallery.photonic-gallery { height: 256px; background-image: url(../images/Icons.svg); background-size: 256px; }
.mce-content-body img.wp-media.wp-gallery.photonic-gallery-500px { background-position: center -2048px; }
.mce-content-body img.wp-media.wp-gallery.photonic-gallery-flickr { background-position: center -2304px; }
.mce-content-body img.wp-media.wp-gallery.photonic-gallery-instagram { background-position: center -2560px; }
.mce-content-body img.wp-media.wp-gallery.photonic-gallery-smugmug { background-position: center -2816px; }
.mce-content-body img.wp-media.wp-gallery.photonic-gallery-zenfolio { background-position: center -3072px; }
.mce-content-body img.wp-media.wp-gallery.photonic-gallery-wp { background-position: center -3328px; }
.mce-content-body img.wp-media.wp-gallery.photonic-gallery-picasa { background-position: center -3584px; }

