Style SVG circle with CSS

Question

So I have my SVG-circle.

Answer 1

As Phillip suggested in the comment above you can do this with CSS 3 transform.

  circle:hover {
    -webkit-transform: scale(x, y);
  }

("-webkit" prefix is for Chrome only)

See https://developer.mozilla.org/en-US/docs/Web/CSS/transform

Here's a working example with CSS transitions too: http://jsbin.com/sozewiso/2