I need to set the 'xlink:href' attribute on an svg <image> element, described here.
<image>
Can I do this with CSS?
No, because xlink:href isn't a CSS property. See the list of css properties required in SVG 1.1.
xlink:href
No, because
xlink:hrefisn't a CSS property. See the list of css properties required in SVG 1.1.