.puppy-btn {
  color: white;
  padding: 0;
  cursor: pointer;
  font-size: 18px;
  width: 40px;
  height: 40px;
  text-align: center;
  line-height: 42px;
  background: #0dbcee;
  border-radius: 50%;
  -moz-transition: all .2s;
  -webkit-transition: all .2s;
  -o-transition: all .2s;
  transition: all .2s;
}

.puppy-btn.play:hover, .puppy-btn.pause:hover, .puppy-btn.add:hover {
  background: #0058aa;
}

.puppy-btn.play:active, .puppy-btn.pause:active {
  background: #00284d;
}

.puppy-btn.play {
  /* Infuriatingly, the play icon in fontawesome does not center properly. */
  padding: 0 0 0 2px;
}

.puppy-btn.pause {
  /* Infuriatingly, the pause icon in fontawesome does not center properly. */
  text-align: left;
  padding: 0 0 0 12px;
}

.puppy-btn.remove {
  background: #666666;
}

.puppy-btn.remove:hover {
  background: #333333;
}

.puppy-btn.remove:active {
  background: #000000;
}

.puppy-btn.tick {
  background: #07c67c;
}

.puppy-btn.error {
  background: #E12A4A;
}