CodePen Embed - playing with vmax

<div class="resi"></div>

body {
  background-color: black;
  margin: 0;
}

.resi {
  border: 2px solid rgba(255, 0, 183, 1);
  width: 30vmax;
  height: 30vmax;
  margin-inline-start: auto;
  margin-inline-end: auto;
  margin-top: 7em;
}

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