body {
  background-image: url('https://m.media-amazon.com/images/I/81kQ4NBYB2L._AC_UF894,1000_QL80_.jpg');
  background-repeat:repeat;
  background-size: 700px 700px;
  margin:0px;
  padding:0px;
  overflow:hidden;
}

.header {
  background:#f1eab9;
  width:900px;
  margin:auto;
  position: sticky;
  top: 0;
  text-align:center;
  font-size:50px;
  color:#272727;
  
}

.links {
  background:#666;
  width:900px;
}

.bookshelf {
  margin:auto;
  background-image: url('https://i.imgur.com/LG07HA9.jpeg');
  background-size:50%;
  background-repeat:repeat;
  height:100vh;
  width:860px;
  padding:20px;
  overflow-y:auto;
}

.stickies {
  background:#f1eab9;
  width: 100px;
  padding:30px;
  height:100px;
  text-align:center;
  box-shadow: -6px 6px 10px 0px rgba(0, 0, 0, 0.4);
}