Bond

<div></div>
<div></div>
<style>
  body {
    background: #558c90;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 75px;
  }
  div {
    width: 50px;
    height: 50px;
    background: #325853;
    border-radius: 50%;
    box-shadow: 0 0 0 36.5px #fff;
  }

  div::before {
    content: '';
    width: 100%;
    height: 50px;
    background: #ffffff;
    position: absolute;
    top: 50%;
    left: 50%;
    translate: -50% -50%;
    z-index: -1;
  }
</style>