library_books<style>
  @keyframes scaleRotate{
    0%,100%{transform:rotate(0deg) scale(1,1);}
    50%{transform:rotate(360deg) scale(.5,.5);}
  }
  #box {
    width:80px;height:80px;
    margin:60px auto;
    border-radius:25%;
    padding:10px;
    background:red;
    animation:scaleRotate 2s linear infinite;
  }
  #circle{
    border-radius:50%;
    background-color:black;
    height:100%
  }
 </style>
 <div id="box">
    <div id="circle"></div>
 </div>

library_books<style>
  @keyframes scaleRotate{
    0%,100%{transform:rotate(0deg) scale(1,1);}
    50%{transform:rotate(360deg) scale(.5,.5);}
  }
  #box {
    width:80px;height:80px;
    margin:60px auto;
    border-radius:25%;
    padding:10px;
    background:red;
    animation:scaleRotate 2s linear infinite;
  }
  #circle{
    border-radius:10% 50%;
    background-color:black;
    height:100%
  }
 </style>
 <div id="box">
    <div id="circle"></div>
 </div>