html,
body {
  height: 100%;
  width: 100%;
  min-height: 100%;
  min-width: 100%;
}

body {
  overflow: hidden;
  background-color: #fcfcfc;
  margin: 0;
  padding: 0;
}

.flipbook-viewport {
  overflow: hidden;
  width: 90%;
  height: 100%;
}

.flipbook-viewport .container {
  position: absolute;
  top: 0;
  left: 0;
  margin: auto;
}

.flipbook-viewport .flipbook {
  width: 922px;
  height: 600px;
}

.flipbook-viewport .page {
  width: 461px;
  height: 600px;
  background-color: white;
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.flipbook .page {
  -ms-box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
  -o-box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

.flipbook-viewport .page img {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  margin: 0;
}

.flipbook-viewport .shadow {
  -webkit-transition: -webkit-box-shadow 0.5s;
  -moz-transition: -moz-box-shadow 0.5s;
  -o-transition: -webkit-box-shadow 0.5s;
  -ms-transition: -ms-box-shadow 0.5s;
  -o-box-shadow: 0 0 20px #ccc;
  -ms-box-shadow: 0 0 20px #ccc;
  box-shadow: 0 0 20px #ccc;
}