SVG: Use Attributes or CSS to style?

Question

In HTML it is recommended to seperate Content from Style, thus you should create external CSS-Files for your styles. As I am just getting started with SVG I now wonder: Does thi

Answer 1

The difference is always if it's content or it's presentation.

If the circle is content and it has to show whether or not there css available, then the first option is the one.

But if the circle is just part of the site disign and doesn't add anything to the content, then it should be the second option. Or use a css class.