Germina

.ig-b- { display: inline-block; }
.ig-b- img { visibility: hidden; }
.ig-b-:hover { background-position: 0 -60px; } .ig-b-:active { background-position: 0 -120px; }
.ig-b-48 { width: 48px; height: 48px; background: url(//badges.instagram.com/static/images/ig-badge-sprite-48.png) no-repeat 0 0; }
@media only screen and (-webkit-min-device-pixel-ratio: 2), only screen and (min--moz-device-pix  ...