1 <p>The background image is assigned to the .no-viewbox block without a viewbox, and it does not stretch.</p>

2 <ol><li>Set a background image address has-viewbox.svg for the .has-viewbox block, and observe how the background with the viewbox behaves: The image fills the available space while maintaining its aspect ratio.</li>

3 <li>Set a background image address has-viewbox-psa-none.svg for the .has-viewbox-psa-none block. Note how the background image is now stretched without preserving its aspect ratio, and the background is completely flexible.</li>

4 </ol>