#cf {
	position:relative;
	height:166px;
	width:238px;
	margin-top: 0;
	margin-right: auto;
	margin-bottom: 5;
	margin-left: auto;
	padding-left: 10px;
}

#cf img {
  position:absolute;
  left:0;
  -webkit-transition: opacity 1s ease-in-out;
  -moz-transition: opacity 1s ease-in-out;
  -o-transition: opacity 1s ease-in-out;
  transition: opacity 1s ease-in-out;
}

#cf img.top:hover {
  opacity:0;
}