/* standard elements */

body  {
	background-color: #FFFFFF;
	}

.center {
	display: flex;
	justify-content: center;
	align-items: center;
	height: 100%;
	width: 100%
}

img {
	border: 0pt;
	padding: 0pt;
	cursor: pointer;
	}

 #xfade {
	position:relative;
    }
        
#xfade img#default {
  	position: absolute;
	opacity:1;
	}

#xfade img#fadeto {
  	position: absolute;
	opacity:0;
	}