library_books<svg xmlns="http://www.w3.org/2000/svg"
     width="200" height="200" viewBox="0 0 200 200">
  <g stroke="red" fill="none">
    <circle cx="90" cy="100" r="40"/>
    <circle cx="110" cy="100" r="40"/>
    <circle cx="100" cy="90" r="40"/>
    <circle cx="100" cy="110" r="40"/>
    <animateTransform attributeName="transform"
              type="rotate" 
              from="360 100 100" 
              to="0 100 100" 
              dur="5s" 
              begin="0s"
              repeatCount="indefinite"/>
  </g>
</svg>

library_books<svg xmlns="http://www.w3.org/2000/svg"
     width="200" height="200" viewBox="0 0 200 200">
  <g stroke="red" fill="none" stroke-dasharray="10 5">
    <circle cx="90" cy="100" r="40"/>
    <circle cx="110" cy="100" r="40"/>
    <circle cx="100" cy="90" r="40"/>
    <circle cx="100" cy="110" r="40"/>
    <circle cx="100" cy="100" r="5" fill="red" stroke="none"/>
    <animateTransform attributeName="transform" 
              type="rotate" 
              from="360 100 100" 
              to="0 100 100" 
              dur="5s" 
              begin="0s"
              repeatCount="indefinite"/>
  </g>
</svg>