::before,
::after {
	content: "";
}

#bouquin{
	position: absolute;
	width: 160px;
	height: 220px;
	margin-left: 20%;
	left: 20%;
	top: 15px;
	background-color: #00FF99;
}

.btn {
	display: inline-block;
	text-transform: uppercase;
	border: 2px solid #2c3e50;
	margin-top: 50px;
	font-size: 18px;
	font-weight: 700;
	padding: 0.1em 0.4em;
	text-align: center;
	-webkit-transition: color 0.3s, border-color 0.3s;
	-moz-transition: color 0.3s, border-color 0.3s;
	transition: color 0.3s, border-color 0.3s;
	margin-left: 10px;
	color: #333333;
}

.btn:hover {
	border-color: #16a085;
color: #333333;
}

ul {
	margin: 0;
	padding: 0;
	list-style: none;
}
.page > li a{
	color: #333333;
	font-size: 1em;
	text-align: center;
	text-shadow: -1px -1px 0 rgba(0,0,0,0.1);
}

.book {
	position: relative;
	width: 160px; 
	height: 220px;
	-webkit-perspective: 1000px;
	-moz-perspective: 1000px;
	perspective: 1000px;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	transform-style: preserve-3d;
}

/*
	2. background & color
*/

/* HARDCOVER FRONT */
.hardcover_front li:first-child {
	background-color: #ABABAB;
	-webkit-backface-visibility: hidden;
	-moz-backface-visibility: hidden;
	backface-visibility: hidden;
}

/* reverse */
.hardcover_front li:last-child {
	background-color: #ccc;
}

/* HARDCOVER BACK */
.hardcover_back li:first-child {
	background-color: #990000;
}

/* reverse */
.hardcover_back li:last-child {
	background:#990000;
}

.book_spine li:first-child {
	background: #eee;
}
.book_spine li:last-child {
	background: #333;
}

/* thickness of cover */

.hardcover_front li:first-child:after,
.hardcover_front li:first-child:before,
.hardcover_front li:last-child:after,
.hardcover_front li:last-child:before,
.hardcover_back li:first-child:after,
.hardcover_back li:first-child:before,
.hardcover_back li:last-child:after,
.hardcover_back li:last-child:before,
.book_spine li:first-child:after,
.book_spine li:first-child:before,
.book_spine li:last-child:after,
.book_spine li:last-child:before {
	background: #999;
}

/* page */

.page > li {
	background: -webkit-linear-gradient(left, #e1ddd8 0%, #fffbf6 100%);
	background: -moz-linear-gradient(left, #e1ddd8 0%, #fffbf6 100%);
	background: -ms-linear-gradient(left, #e1ddd8 0%, #fffbf6 100%);
	background: linear-gradient(left, #e1ddd8 0%, #fffbf6 100%);
	box-shadow: inset 0px -1px 2px rgba(50, 50, 50, 0.1), inset -1px 0px 1px rgba(150, 150, 150, 0.2);
	border-radius: 0px 5px 5px 0px;
}

/*
	3. opening cover, back cover and pages
*/

.hardcover_front {
	-webkit-transform: rotateY(-44deg) translateZ(8px);
	-moz-transform: rotateY(-44deg) translateZ(8px);
	transform: rotateY(-44deg) translateZ(8px);
	z-index: 100;
}

.hardcover_back {
	-webkit-transform: rotateY(-15deg) translateZ(-8px);
	-moz-transform: rotateY(-15deg) translateZ(-8px);
	transform: rotateY(-15deg) translateZ(-8px);
}

.page li:nth-child(1) {
	-webkit-transform: rotateY(-28deg);
	-moz-transform: rotateY(-28deg);
	transform: rotateY(-28deg);
}

.page li:nth-child(2) { background-image: url(.png);

	-webkit-transform: rotateY(-30deg);
	-moz-transform: rotateY(-30deg);
	transform: rotateY(-30deg);
}

.page li:nth-child(3) { 
	-webkit-transform: rotateY(-32deg);
	-moz-transform: rotateY(-32deg);
	transform: rotateY(-32deg);
}

.page li:nth-child(4) { 
	-webkit-transform: rotateY(-34deg);
	-moz-transform: rotateY(-34deg);
	transform: rotateY(-34deg);
}

.page li:nth-child(5) { 
	-webkit-transform: rotateY(-36deg);
	-moz-transform: rotateY(-36deg);
	transform: rotateY(-36deg);
}

/*
	4. position, transform & transition
*/

.hardcover_front,
.hardcover_back,
.book_spine,
.hardcover_front li,
.hardcover_back li,
.book_spine li {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	transform-style: preserve-3d;
	}

.hardcover_front,
.hardcover_back {
	-webkit-transform-origin: 0% 100%;
	-moz-transform-origin: 0% 100%;
	transform-origin: 0% 100%;
}

.hardcover_front {
	-webkit-transition: all 0.8s ease, z-index 0.6s;
	-moz-transition: all 0.8s ease, z-index 0.6s;
	transition: all 0.8s ease, z-index 0.6s;
}

/* HARDCOVER front */
.hardcover_front li:first-child {
	cursor: default;
	-webkit-user-select: none;
	-moz-user-select: none;
	user-select: none;
	-webkit-transform: translateZ(2px);
	-moz-transform: translateZ(2px);
	transform: translateZ(2px);
}

.hardcover_front li:last-child {
	-webkit-transform: rotateY(180deg) translateZ(2px);
	-moz-transform: rotateY(180deg) translateZ(2px);
	transform: rotateY(180deg) translateZ(2px);
}

/* HARDCOVER back */
.hardcover_back li:first-child {
	-webkit-transform: translateZ(2px);
	-moz-transform: translateZ(2px);
	transform: translateZ(2px);
}

.hardcover_back li:last-child {
	-webkit-transform: translateZ(-2px);
	-moz-transform: translateZ(-2px);
	transform: translateZ(-2px);
}

/* thickness of cover */
.hardcover_front li:first-child:after,
.hardcover_front li:first-child:before,
.hardcover_front li:last-child:after,
.hardcover_front li:last-child:before,
.hardcover_back li:first-child:after,
.hardcover_back li:first-child:before,
.hardcover_back li:last-child:after,
.hardcover_back li:last-child:before,
.book_spine li:first-child:after,
.book_spine li:first-child:before,
.book_spine li:last-child:after,
.book_spine li:last-child:before {
	position: absolute;
	top: 0;
	left: 0;

}

/* HARDCOVER front */
.hardcover_front li:first-child:after,
.hardcover_front li:first-child:before {
	width: 4px;
	height: 100%;
}

.hardcover_front li:first-child:after {
	-webkit-transform: rotateY(90deg) translateZ(-2px) translateX(2px);
	-moz-transform: rotateY(90deg) translateZ(-2px) translateX(2px);
	transform: rotateY(90deg) translateZ(-2px) translateX(2px);
}

.hardcover_front li:first-child:before {
	-webkit-transform: rotateY(90deg) translateZ(158px) translateX(2px);
	-moz-transform: rotateY(90deg) translateZ(158px) translateX(2px);
	transform: rotateY(90deg) translateZ(158px) translateX(2px);
}

.hardcover_front li:last-child:after,
.hardcover_front li:last-child:before {
	width: 4px;
	height: 160px;
}

.hardcover_front li:last-child:after {
	-webkit-transform: rotateX(90deg) rotateZ(90deg) translateZ(80px) translateX(-2px) translateY(-78px);
	-moz-transform: rotateX(90deg) rotateZ(90deg) translateZ(80px) translateX(-2px) translateY(-78px);
	transform: rotateX(90deg) rotateZ(90deg) translateZ(80px) translateX(-2px) translateY(-78px);
}
.hardcover_front li:last-child:before {
	box-shadow: 0px 0px 30px 5px #333;
	-webkit-transform: rotateX(90deg) rotateZ(90deg) translateZ(-140px) translateX(-2px) translateY(-78px);
	-moz-transform: rotateX(90deg) rotateZ(90deg) translateZ(-140px) translateX(-2px) translateY(-78px);
	transform: rotateX(90deg) rotateZ(90deg) translateZ(-140px) translateX(-2px) translateY(-78px);
}

/* thickness of cover */

.hardcover_back li:first-child:after,
.hardcover_back li:first-child:before {
	width: 4px;
	height: 100%;
}

.hardcover_back li:first-child:after {
	-webkit-transform: rotateY(90deg) translateZ(-2px) translateX(2px);
	-moz-transform: rotateY(90deg) translateZ(-2px) translateX(2px);
	transform: rotateY(90deg) translateZ(-2px) translateX(2px);
}
.hardcover_back li:first-child:before {
	-webkit-transform: rotateY(90deg) translateZ(158px) translateX(2px);
	-moz-transform: rotateY(90deg) translateZ(158px) translateX(2px);
	transform: rotateY(90deg) translateZ(158px) translateX(2px);
}

.hardcover_back li:last-child:after,
.hardcover_back li:last-child:before {
	width: 4px;
	height: 160px;
}

.hardcover_back li:last-child:after {
	-webkit-transform: rotateX(90deg) rotateZ(90deg) translateZ(80px) translateX(2px) translateY(-78px);
	-moz-transform: rotateX(90deg) rotateZ(90deg) translateZ(80px) translateX(2px) translateY(-78px);
	transform: rotateX(90deg) rotateZ(90deg) translateZ(80px) translateX(2px) translateY(-78px);
}

.hardcover_back li:last-child:before {
	box-shadow: 10px -1px 80px 20px #666;
	-webkit-transform: rotateX(90deg) rotateZ(90deg) translateZ(-140px) translateX(2px) translateY(-78px);
	-moz-transform: rotateX(90deg) rotateZ(90deg) translateZ(-140px) translateX(2px) translateY(-78px);
	transform: rotateX(90deg) rotateZ(90deg) translateZ(-140px) translateX(2px) translateY(-78px);
}


.page,
.page > li {
	position: absolute;
	top: 0;
	left: 0;
	-webkit-transform-style: preserve-3d;
	-moz-transform-style: preserve-3d;
	transform-style: preserve-3d;
}

.page {
	width: 100%;
	height: 98%;
	top: 1%;
	left: 3%;
	z-index: 10;
}

.page > li {
	width: 100%;
	height: 100%;
	-webkit-transform-origin: left center;
	-moz-transform-origin: left center;
	transform-origin: left center;
	-webkit-transition-property: transform;
	-moz-transition-property: transform;
	transition-property: transform;
	-webkit-transition-timing-function: ease;
	-moz-transition-timing-function: ease;
	transition-timing-function: ease;
}


.book > .hardcover_front {
animation:couverture 10s infinite alternate;
	z-index: 0;
}
@keyframes couverture {
	0%   { transform: rotateY(-39deg) translateZ(0);}
	50%  { transform: rotateY(-145deg) translateZ(0);}
	100% { transform: rotateY(-40deg) translateZ(0);}
} 
.book > .page li:nth-child(2) {
animation:page2 10s infinite alternate;
}
@keyframes page2 {
	0%   { transform: rotateY(-30deg) translateZ(0);}
	50%  { transform:rotateY(-30deg);}
	100% { transform: rotateY(-30deg) translateZ(0);}
} 
.book > .page li:nth-child(3) {
animation:page3 10s infinite alternate;
}
@keyframes page3 {
	0%   { transform: rotateY(-30deg) translateZ(0);}
	50%  { transform:rotateY(-118deg) translateZ(0);}
	100% { transform: rotateY(-30deg) translateZ(0);}
}
.book > .page li:nth-child(4) {
animation:page4 10s infinite alternate;
}
@keyframes page4 {
	0%   { transform: rotateY(-30deg) translateZ(0);}
	50%  { transform:rotateY(-130deg) translateZ(0);}
	100% { transform: rotateY(-30deg) translateZ(0);}
}
.book > .page li:nth-child(5) {
animation:page5 10s infinite alternate;
}
@keyframes page5 {
	0%   { transform: rotateY(-30deg) translateZ(0);}
	50%  { transform:rotateY(-140deg) translateZ(0);}
	100% { transform: rotateY(-30deg) translateZ(0);}
} 



/*
	6. Bonus
*/

/* cover CSS */

.coverDesign {
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
	overflow: hidden;
	-webkit-backface-visibility: hidden;
	-moz-backface-visibility: hidden;
	backface-visibility: hidden;
	z-index: 455;
}

.coverDesign::after {
	background-image: -webkit-linear-gradient( -135deg, rgba(255, 255, 255, 0.45) 0%, transparent 100%);
	background-image: -moz-linear-gradient( -135deg, rgba(255, 255, 255, 0.45) 0%, transparent 100%);
	background-image: linear-gradient( -135deg, rgba(255, 255, 255, 0.45) 0%, transparent 100%);
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
}

.coverDesign h1 {
	color: #fff;
	font-size: 1.5em;
	letter-spacing: 0.05em;
	text-align: center;
	margin: 24% 0 0 0;
	text-shadow: -1px -1px 0 rgba(0,0,0,0.1);
}

.coverDesign p {
	color: #f8f8f8;
	font-size: 1em;
	text-align: center;
	text-shadow: -1px -1px 0 rgba(0,0,0,0.1);
}


.blue {
	background-color: #777;

}