*,
*:before,
*:after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
}

body {
  background: #eee;
  color: #222;
  font-family: sans-serif;
  font-size: 14px;
  line-height: 1.2;
  display: flex;
  justify-content: center;
  align-items: center;
}

svg {
  display: block;
  width: 500px;
  height: 500px;
}

rect {
  fill: transparent;
  stroke-width: 1;
  stroke: coral
}