<svg width="300" height="300" viewBox="0 0 150 150">
  <rect width="100" height="100" x="0" y="0" />
</svg>
svg {
  border: 6px solid #7B331D;
  background: #FDEBC9;
}

svg rect {
  fill: #ED8935;
}

External CSS

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External JavaScript

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