[zascok]

Originally Posted by faisaly.com

This would be even better for all avatars including postbit_legacy...

put

.avatarcontainer img,
.postuseravatar img {
	opacity:0.5;
	transition: all 0.5s ease-in;
        -moz-transition: all 0.5s ease-in;
        -webkit-transition: all 0.5s ease-in;
}
.avatarcontainer:hover img,
.postuseravatar:hover img {
	opacity:1;
}

should work as well