body {
  min-height: 100vh;
  display: grid;
  place-content: center;
}
svg {
  width: 70vmin;
  height: 70vmin;
}
circle {
  stroke-width: 1;
  stroke: black;
  vector-effect: non-scaling-stroke;
  fill: none;
  -webkit-transform-origin: right center;
          transform-origin: right center;
  transform-box: fill-box;
}