body{
	margin: 0;
	padding: 0;
	background: #607d8b;
}

.box{
	position: absolute;
	top: calc(50% - 150px);
	left: calc(50% - 100px);
	-webkit-transform: perspective(1000px) rotateY(-45deg);
	-moz-transform: perspective(1000px) rotateY(-45deg);
	-o-transform: perspective(1000px) rotateY(-45deg);
	-ms-transform: perspective(1000px) rotateY(-45deg);
	transform: perspective(1000px) rotateY(-45deg);
	width: 200px;
	height: 300px;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	-o-transform-style: preserve-3d;
	-ms-transform-style: preserve-3d;
	transform-style: preserve-3d;
}

.box:before{
	content: '';
	position: absolute;
	bottom: -100px;
	left: 0;
	width: 100%;
	height: 50px;
	background: #000;
	filter: blur(40px);
	opacity: 0.5;
	-webkit-transform: rotateX(90deg);
	-moz-transform: rotateX(90deg);
	-o-transform: rotateX(90deg);
	-ms-transform: rotateX(90deg);
	transform: rotateX(90deg);
}

.box div{
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	-o-transform-style: preserve-3d;
	-ms-transform-style: preserve-3d;
	transform-style: preserve-3d;
	-webkit-animation: animate 5s linear infinite;
	-moz-animation: animate 5s linear infinite;
	-o-animation: animate 5s linear infinite;
	-ms-animation: animate 5s linear infinite;
	animation: animate 5s linear infinite;
}

.box div span{
	position: absolute;
	top: 0;
	left: 0;
	display: block;
	width: 100%;
	height: 100%;
	background-color: #bbb;
	background-image: linear-gradient(0deg, #f1f1f1, #bbb, #f1f1f1);
	-webkit-border-radius: 20px;
	-moz-border-radius: 20px;
	-o-border-radius: 20px;
	-ms-border-radius: 20px;
	border-radius: 20px;
}

.box div span:nth-child(1){
	-webkit-transform: rotateX(0deg);
	-moz-transform: rotateX(0deg);
	-o-transform: rotateX(0deg);
	-ms-transform: rotateX(0deg);
	transform: rotateX(0deg);
}

.box div span:nth-child(2){
	-webkit-transform: rotateX(45deg);
	-moz-transform: rotateX(45deg);
	-o-transform: rotateX(45deg);
	-ms-transform: rotateX(45deg);
	transform: rotateX(45deg);
}
.box div span:nth-child(3){
	-webkit-transform: rotateX(-45deg);
	-moz-transform: rotateX(-45deg);
	-o-transform: rotateX(-45deg);
	-ms-transform: rotateX(-45deg);
	transform: rotateX(-45deg);
}
.box div span:nth-child(4){
	-webkit-transform: rotateX(90deg);
	-moz-transform: rotateX(90deg);
	-o-transform: rotateX(90deg);
	-ms-transform: rotateX(90deg);
	transform: rotateX(90deg);
}

@keyframes animate{
	0%{
		-webkit-transform: perspective(1000px) rotateX(0deg);
		-moz-transform: perspective(1000px) rotateX(0deg);
		-o-transform: perspective(1000px) rotateX(0deg);
		-ms-transform: perspective(1000px) rotateX(0deg);
		transform: perspective(1000px) rotateX(0deg);
	}
	100%{
		-webkit-transform: perspective(1000px) rotateX(359deg);
		-moz-transform: perspective(1000px) rotateX(359deg);
		-o-transform: perspective(1000px) rotateX(359deg);
		-ms-transform: perspective(1000px) rotateX(359deg);
		transform: perspective(1000px) rotateX(359deg);
	}
}