<main>
  <input type="radio" name="cover" id="last-shot" checked />
  <input type="radio" name="cover" id="mu" />
  <input type="radio" name="cover" id="celtic" />
  <input type="radio" name="cover" id="blank" />

  <book></book>

  <labels>
    <label for="last-shot">The Last Shot</label>
    <label for="mu">The Lost City of Mū</label>
    <label for="celtic">Celtic Tales</label>
    <label for="blank">No cover</label>
    <p>This experiment was based on <a href="https://books.apple.com/ie/book/corto-malt%C3%A9s-m%C5%AB-el-continente-perdido/id1325824788">Apple Books</a> which uses PNG image overlays to create the effect.</p>
  </labels>
</main>
book {
  $book-width: 40vmin;
  $bit: $book-width / 160;
  
  position: relative;
  background: {
    color: white;
    size: cover;
  }
  box-shadow:
    #{$bit / 2} #{$bit / 2} #{$bit * 2} rgba(black, 0.3),
    $bit $bit #{$bit * 4} rgba(black, 0.3),
    #{$bit * 4} #{$bit * 5} #{$bit * 10} rgba(black, 0.4);
  
  &, &::after {
    display: block;
    width: $book-width;
    height: #{$book-width * 1.5};
    border-radius: #{$bit * 2};
  }
  
  &::after {
    content: '';
    position: absolute;
      top: 0;
      left: 0;
    box-shadow:
      -#{$bit / 2} -#{$bit} #{$bit * 2} rgba(black, 0.2) inset,
      -#{$bit / 2} -#{$bit / 2} $bit rgba(black, 0.2) inset;
    background-image:
      linear-gradient(
        to bottom,
        rgba(white, 0.1),
        rgba(black, 0.2)
      ),
      linear-gradient(
        to right,
        rgba(black, 0.2) 0,
        rgba(black, 0) #{$bit * 2},
        rgba(black, 0.2) #{$bit * 4},
        rgba(black, 0) #{$bit * 5}
      );
  }

  #mu:checked ~ & { background-image: url("https://is1-ssl.mzstatic.com/image/thumb/Publication4/v4/8d/4f/76/8d4f7649-69a6-1701-dd26-0c34e19488ac/front_cover.jpg/292x0w.jpg"); }
  #celtic:checked ~ & { background-image: url("https://is2-ssl.mzstatic.com/image/thumb/Publication/v4/f9/be/d8/f9bed8b7-e8ce-f1c2-b020-84a9ed10dcc2/front_cover.jpg/292x0w.jpg"); }
   #last-shot:checked ~ & { background-image: url("https://images-na.ssl-images-amazon.com/images/I/51EU6mhQT1L.jpg"); }
  #blank:checked ~ & { background-image: none; }
}

// ------ all other stylings ------

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: linen;
  font: {
    family: sans-serif;
    size: 2.4vmin;
    weight: 100;
  }
  color: #5f5846;
}

main {
  display: flex;
}

input {
  position: fixed;
  top: -999px;
  left: -999px;
}

labels {
  width: 18em;
}

label {
  display: block;
  margin: 0.5rem;
  padding: 2vmin;
  font: {
    family: sans-serif;
    size: 1.5em;
  }
  
  &::before {
    content: "Hugo Pratt";
    display: block;
    opacity: 0.7;
    font-size: 60%;
    line-height: 1em;
    text-transform: uppercase;
  }
  
  &:nth-child(4)::before {
    content: none;
  }
  
      #last-shot:checked ~ labels &[for="last-shot"],
      #mu:checked ~ labels &[for="mu"],
      #celtic:checked ~ labels &[for="celtic"],
      #blank:checked ~ labels &[for="blank"] {
        background-color: #5f5846;
        color: white;
    }
}

p {
  padding: 2vmin;
}
View Compiled

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