style.css

@-webkit-keyframes movetop {
    80% {opacity:1;}
	100% {opacity:.4; transform: translate(-50%, -115%);}
}

@keyframes movetop {
    80% {opacity:1;}
	100% {opacity:.4; transform: translate(-50%, -115%);}
}

.selected{
	-webkit-animation: movetop 1s forwards;
	animation: movetop 1s forwards;
	border: 4px dotted red;
}


@-webkit-keyframes fade {
	80% {opacity: 1;}
    100% {opacity: 0;}
}

@keyframes fade {
	80% {opacity: 1;}
    100% {opacity: 0;}
}

.faded {
	opacity: .4;
	filter: alpha(opacity=40);	
}

.fade {
	-webkit-animation: fade 1s forwards;
	animation: fade 1s forwards;
}

.decision-stim {
    display: block;
    height: 10vw;
	position:absolute;
	top:50%;
	left:50%;
	transform: translate(-50%,-50%);
} 	


.decision-left {
	width: 18vw;
	height: 18vw;
  position:absolute;
  top:50%;
  left:50%;
  margin-right:-50%;
  transform: translate(-125%,-5%);
}

.decision-right {
	width: 18vw;
	height: 18vw;
  position:absolute;
  top:50%;
  left:50%;
  margin-right:-50%;
  transform: translate(25%,-5%);
}

.decision-top {
  width: 18vw;
  height: 18vw;
  position:absolute;
  top:50%;
  left:50%;
  margin-right:-50%;
  transform: translate(-50%,-115%);
  border-style: solid;
  border-color: white;
}

.decision-fb {
    width:200px;
  position:absolute;
  top:50%;
  left:50%;
  margin-right:-50%;
  transform: translate(-50%,-5%);
}