<svg width="400px" height="200px" viewBox="0 0 4000 2000" version="1.1">      <title>Example Units</title>      <desc>Illustrates various units options</desc>      <rect x="5" y="5" width="3990" height="1990" fill="none" stroke="blue" stroke-width="10"/>      <g fill="blue" stroke="red" font-family="Verdana" font-size="150">           <g transform="translate(400,0)">                <text x="-50" y="300" fill="black" stroke="none">Abs. units:</text>                <rect x="0" y="400" width="4in" height="2in" stroke-width=".4in"/>                <rect x="0" y="750" width="384" height="192" stroke-width="38.4"/>                <g transform="scale(2)">                     <rect x="0" y="600" width="4in" height="2in" stroke-width=".4in"/>                </g>           </g>           <g transform="translate(1600,0)">                <text x="-50" y="300" fill="black" stroke="none">Rel. units:</text>                <rect x="0" y="400" width="2.5em" height="1.25em" stroke-width=".25em"/>                <rect x="0" y="750" width="375" height="187.5" stroke-width="37.5"/>                <g transform="scale(2)">                     <rect x="0" y="600" width="2.5em" height="1.25em" stroke-width=".25em"/>                </g>           </g>           <g transform="translate(2800,0)">                <text x="-50" y="300" fill="black" stroke="none">Percentages:</text>                <rect x="0" y="400" width="10%" height="10%" stroke-width="1%"/>                <rect x="0" y="750" width="400" height="200" stroke-width="31.62"/>                <g transform="scale(2)">                     <rect x="0" y="600" width="10%" height="10%" stroke-width="1%"/>                </g>           </g>      </g> </svg>

Original SVG source