input[type=checkbox] {
  display: none;
}

h1 {
  margin: 0;
}
#page1 ~ .pages div.page1 {
    background-image: url('../Images/bookcover.jpeg');
  -webkit-transform: rotateY(-34deg);
  -moz-transform: rotateY(-34deg);
  transform: rotateY(-34deg);
}

#page1:checked ~ .pages div.page1 {
  -webkit-transform: rotateY(-140deg);
  -moz-transform: rotateY(-140deg);
  transform: rotateY(-140deg);
}

#page2 ~ .pages div.page2 {
  -webkit-transform: rotateY(-32deg);
  -moz-transform: rotateY(-32deg);
  transform: rotateY(-32deg);
}

#page2:checked ~ .pages div.page2 {
  -webkit-transform: rotateY(-140deg);
  -moz-transform: rotateY(-140deg);
  transform: rotateY(-140deg);
}

#page3 ~ .pages div.page3 {
  -webkit-transform: rotateY(-30deg);
  -moz-transform: rotateY(-30deg);
  transform: rotateY(-30deg);
}

#page3:checked ~ .pages div.page3 {
  -webkit-transform: rotateY(-140deg);
  -moz-transform: rotateY(-140deg);
  transform: rotateY(-140deg);
}

#page4 ~ .pages div.page4 {
  -webkit-transform: rotateY(-28deg);
  -moz-transform: rotateY(-28deg);
  transform: rotateY(-28deg);
}

#page4:checked ~ .pages div.page4 {
  -webkit-transform: rotateY(-140deg);
  -moz-transform: rotateY(-140deg);
  transform: rotateY(-140deg);
}

.book {
  position: relative;
  width: 200px;
  height: 350px;
  margin-left: 160px;
  -webkit-perspective: 1000px;
  -moz-perspective: 1000px;
  perspective: 1000px;
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  transform-style: preserve-3d;
}
.book .pages,
.book .pages > div {
  position: absolute;
  top: 0;
  left: 0;
  -webkit-transform-style: preserve-3d;
  -moz-transform-style: preserve-3d;
  transform-style: preserve-3d;
}
.book .pages {
  width: 100%;
  height: 98%;
  top: 1%;
  left: 3%;
  z-index: 10;
}
.book .pages > div {
  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;
  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;
  -webkit-transition-duration: 1s;
}
.book .pages > div:hover {
  box-shadow: inset 1px 0px 2px rgba(50, 50, 50, 0.1), inset -3px 1px 1px rgba(150, 150, 150, 0.2);
}
.book .pages > div label {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  text-align: center;
  vertical-align: middel;
}