img transitions for opacity
img {
-webkit-backface-visibility: hidden;
-moz-backface-visibility: hidden;
-o-backface-visibility: hidden;
-ms-backface-visibility: hidden;
backface-visibility: hidden;
-webkit-transform: translateZ(0) scale(1.0, 1.0);
-moz-transform: translateZ(0) scale(1.0, 1.0);
-o-transform: translateZ(0) scale(1.0, 1.0);
-ms-transform: translateZ(0) scale(1.0, 1.0);
transform: translateZ(0) scale(1.0, 1.0);
}
/* for opacity-on-hover smoothing */