svg css rounded corner not working

Question

I have an SVG file that I am applying CSS to. Most rules seem to work, but when I apply rules about the rounding of corners (rx:5; ry:5) it has no effect. 'Inline' style rules work, but I'm having no luck with embedded and external style sheets:

<svg ...>
 <defs>
  <style type="text/css" >
    <![CDATA[
     rect{ rx:5; ry:5;  }
    ]]>
  </style>
 </defs>

 <rect
    height="170" width="70" id="rect7"
    x="0" y="0" />
</svg>

Any idea where I am going wrong?

Answer 1

rx and ry are regular attributes rather than presentation attributes. Only presentation attributes can be styled by CSS. The various regular/presentation attributes are listed here

See also Presentation Attribute and Property from the SVG 1.1 specification.

The upcoming SVG 2 specification proposes that most presentation attributes become CSS properties. So far only Chome has implemented this part of the draft specification. I imagine other UAs will implement this in due course.

Answer 2

Scripting can't be simpler, why not to use it:

 yourRect.setAttributeNS(null, "rx", "5");
 yourRect.setAttributeNS(null, "ry", "5");