<svg xmlns="http://www.w3.org/2000/svg" width="310" height="310">
 <desc>The bars should all be the same size.</desc>
 <rect x="0" y="0" height="310" width="310" stroke="navy" fill="none"/>
 <rect x="10" y="10" height="20" width="290" fill="blue"/>
 <rect x="10" y="40" height="20" width="290px" fill="blue"/>
 <rect x="10" y="70" height="20" width="290.0" fill="blue"/>
 <rect x="10" y="100" height="20" width="290.0px" fill="blue"/>
 <rect x="10" y="130" height="20" width="290e0" fill="blue"/>
 <rect x="10" y="160" height="20" width="290e0px" fill="blue"/>
 <rect x="10" y="190" height="20" width="29e1" fill="blue"/>
 <rect x="10" y="220" height="20" width="29e1px" fill="blue"/>
 <rect x="10" y="250" height="20" width="2900e-1" fill="blue"/>
 <rect x="10" y="280" height="20" width="2900e-1px" fill="blue"/>
</svg>