radial-gradient {
  bounds: 0 0 50 50;
  center: 20 20;
  hradius: 10;
  vradius: 20;
  start: 0.25;
  end: 0.75;
  stops: 0 rgb(255,255,0), 0.5 rgb(170,187,204), 1 rgb(255,0,255);
}