.ring_clock_bg {
  fill: #fff;
}

.ring_sep {
  stroke: #fff;
  stroke-width: 1px;
}

.ring_sec_bg { fill: #25d; }
.ring_min_bg { fill: #2a4; }
.ring_hr_bg  { fill: #d20; }

.ring_sec, .ring_min, .ring_hr {
  font-family: monospace;
  text-anchor: middle;
  dominant-baseline: middle;
}