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About the <head>

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CSS

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HTML 

              
                <svg class="book-shelf" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid" viewBox="0 0 84 94" height="94" width="84">
  <path fill="none" d="M37.612 92.805L4.487 73.71c-2.75-1.587-4.45-4.52-4.45-7.687L.008 27.877c-.003-3.154 1.676-6.063 4.405-7.634L37.558 1.167c2.73-1.57 6.096-1.566 8.835.013l33.124 19.096c2.75 1.586 4.45 4.518 4.45 7.686l.028 38.146c.002 3.154-1.677 6.063-4.406 7.634L46.445 92.818c-2.73 1.57-6.096 1.566-8.834-.013z"/>
  <g class="book-shelf__book book-shelf__book--one" fill-rule="evenodd">
    <path fill="#5199fc" d="M31 29h4c1.105 0 2 .895 2 2v29c0 1.105-.895 2-2 2h-4c-1.105 0-2-.895-2-2V31c0-1.105.895-2 2-2z"/>
    <path fill="#afd7fb" d="M34 36h-2c-.552 0-1-.448-1-1s.448-1 1-1h2c.552 0 1 .448 1 1s-.448 1-1 1zm-2 1h2c.552 0 1 .448 1 1s-.448 1-1 1h-2c-.552 0-1-.448-1-1s.448-1 1-1z"/>
  </g>
  <g class="book-shelf__book book-shelf__book--two" fill-rule="evenodd">
    <path fill="#ff9868" d="M39 34h6c1.105 0 2 .895 2 2v24c0 1.105-.895 2-2 2h-6c-1.105 0-2-.895-2-2V36c0-1.105.895-2 2-2z"/>
    <path fill="#d06061" d="M42 38c1.105 0 2 .895 2 2s-.895 2-2 2-2-.895-2-2 .895-2 2-2z"/>
  </g>
  <g class="book-shelf__book book-shelf__book--three" fill-rule="evenodd">
    <path fill="#ff5068" d="M49 32h2c1.105 0 2 .86 2 1.92v25.906c0 1.06-.895 1.92-2 1.92h-2c-1.105 0-2-.86-2-1.92V33.92c0-1.06.895-1.92 2-1.92z"/>
    <path fill="#d93368" d="M50 35c.552 0 1 .448 1 1v2c0 .552-.448 1-1 1s-1-.448-1-1v-2c0-.552.448-1 1-1z"/>
  </g>
  <g fill-rule="evenodd">
    <path class="book-shelf__shelf" fill="#ae8280" d="M21 60h40c1.105 0 2 .895 2 2s-.895 2-2 2H21c-1.105 0-2-.895-2-2s.895-2 2-2z"/>
    <path fill="#855f6d" d="M51.5 67c-.828 0-1.5-.672-1.5-1.5V64h3v1.5c0 .828-.672 1.5-1.5 1.5zm-21 0c-.828 0-1.5-.672-1.5-1.5V64h3v1.5c0 .828-.672 1.5-1.5 1.5z"/>
  </g>
</svg>
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CSS 

              
                body {
  background-color: #f5f5f1;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

@keyframes book-bounce {
  0% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  80% { transform: translateY(0); }
  100% { transform: translateY(0); }
}

@keyframes shelf-lift {
  0% { transform: translateY(0) rotate(0); }
  20% { transform: translateY(-4px) rotate(10deg); }
  40% { transform: translateY(-4px) rotate(0); }
  40% { transform: translateY(-4px) rotate(-10deg); }
  80% { transform: translateY(0); }
  100% { transform: translateY(0); }
}

.book-shelf:hover {
  cursor: pointer;
  
  .book-shelf__book {
    animation: book-bounce 0.4s ease;
    animation-iteration-count: 1;
  }
  
  .book-shelf__book--two {
    animation-delay: 0.04s;
  }

  .book-shelf__book--three {
    animation-delay: 0.08s;
  }
  
  .book-shelf__shelf {
    animation: shelf-lift 0.4s ease;
    animation-iteration-count: 1;
    transform-origin: 50% 50%;
  }
}
!

JS
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999px

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