Create a Graphic Using CSS

<style>
  .center {
    position: absolute;
    margin: auto;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 100px;
    background-color: transparent;
    border-radius: 50%;
    box-shadow: 25px 10px 0px 0px blue;
  }

</style>
<div class="center"></div>