.circle {
  background: rgba(15, 28, 63, 0.125);
  border-radius: 50%;
  display: block;
  height: 0;
  overflow: hidden;
  padding-top: 100%;
  position: relative;
  width: 100%;
}

.circle::after {
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(15, 28, 63, 0.25);
  content: "";
  height: 100%;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}

.circle-fill {
  height: auto;
  left: 0;
  position: absolute;
  top: 0;
  width: 100%;
}

@supports (object-fit: cover) {
  .circle-fill {
    height: 100%;
    object-fit: cover;
  }
}

/**
 * Constrain dimensions for demo
 */

.container {
  max-width: 66vmin;
  width: 66%;
}