Lock Up

<div>
  <div></div>
</div>

<style>
  body {
    background: #e38f66;
    display: grid;
    place-content: center;
  }
  div {
    height: 200px;
    width: 200px;
    border-radius: 50%;
    background: #aa445f;
    display: grid;
    place-content: center;
  }

  div > div {
    height: 80px;
    width: 80px;
    border: 30px solid #f7ec7d;
    border-radius: 50%;
    border-top-color: transparent;
    border-bottom-color: transparent;
    rotate: -45deg;
  }
</style>