body {
  background-image: url(green-3.jpg);
  background-attachment: fixed;
  display: grid;
  justify-content: center;
}

.shelf-holder {
  background-color: antiquewhite;
  border: solid peru 4px;
  width: 1000px;
  height: 480px;
  overflow: scroll;
  padding: 20px;
  margin-bottom: 20px;
}

.shelf-items {
  display: flex;
  margin: 10px;
  height: 440px;
  & img {height: 100%; padding-right: 20px;}
}