Gear

@grid: 1 / 60vmin;
background: #202638;
clip-path: @shape(
  fill: evenodd;
  round: 1;
  points: 240, 200, 200, 36;
  r: .92 + .08 * max(-1, min(1, 2.5cos(24t))),
     .34 + .36 * max(0, min(1, 4 * (.15 - cos(5t)))),
     .34, .09;
);