SVG

SVG

HTML

<svg width="500" height="500" viewBox="0 0 250 100"
      preserveAspectRatio="none"
      style="border: 1px solid #cccccc;">

     <rect x="15" y="15" width="50" height="10"
           style="border: 1px solid #cccccc;"/>
    <rect x="15" y="27" width="50" height="10"
           style="border: 1px solid #cccccc;"/>

</svg>

<!--Calculation  via Javascript

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