CodePen Embed - vYmBejy

<body style="margin: 0;">
  <svg viewBox="-250 -250 500 500">
    <circle r="240" />
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svg {
  display: block;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  min-width: 200vw;
  min-height: 200vh;
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