body{
  width: 600%;
  height: 600vh;
  background-color: #000;
}

.book {
  border: 0px solid blue;
  margin-left: 10%;
  margin-right: 10%;
  width: 80vw;
  height: 50vh;
  position: fixed;
  perspective: 2000px;
}

.cover {
  border: 0px solid green;
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #bbb;
  border-radius: 10px 0 0 10px;
  transform-origin: center;
  transform: rotateY(0deg) rotateX(45deg);
}

.cover.right {
  border: 0px solid black;
  right: 0;
  border-radius: 0 10px 10px 0;
  transform-origin: left;
}

.page {
  text-align: center;
  position: absolute;
  width: 50%;
  height: 100%;
  background-color: #f2f2f2;
  box-shadow: inset 2px 0 5px rgba(0, 0, 0, 0.1);
}

.page.right {
  border: 0px solid red;
  right: 0;
  transform-origin: center;
  transform: rotateX(45deg) rotateY(-10deg) translateZ(70px);
}

.page.left {
  border: 0px solid yellow;
  transform-origin: right;
  transform: rotateX(45deg) rotateY(10deg);
}

.pic{
  height: 20%;
}

@media only screen and (max-width: 768px) {
  body{
    width: 500%;
    height: 500vh;
  }

  .book {
    width: 70vw;
    height: 60vh;
  }
}  

@media only screen and (max-width: 480px) {
  body{
    width: 300%;
    height: 300vh;
  }

  .book{
    position: fixed;
    width: 50%;
    height: 30%;
    margin-left: 5%;
    margin-right: 5%;
    margin-top: 0;
  }

  h1{
    font-size: 12pt;
  }

  h5{
    font-size: 8pt;
  }

  li{
    font-size: 10pt;
  }

  img{
    width: 80%;
  }

  h3{
    display: none;
  }

  .page .right{
    transform-origin: center;
    transform: rotateX(60deg) rotateY(-10deg);
  }
}