.container {
	box-sizing: border-box;
	background: transparent;
	color: white;
	cursor: pointer;
	padding: 20px 0 0 0;
	margin: 0 auto;
	display: inline-block;
	position: relative;
	border-radius: 25px; 
	height: 10px;
	width: 10px;
}

audio {
	display: none;
}

.play-button::before,
.play-button.playing::before{
	content: '';
	display: inline-block;
	border: 0;
  background: transparent;
  box-sizing: border-box;
  width: 0;
  height: 12px;
	margin-right: 15px;

  border-color: transparent transparent transparent #fcf403;
  transition: 100ms all ease;
  cursor: pointer;
  
  border-style: solid;
  border-width: 6px 0 6px 8px;
}

.play-button.playing::before {
	border-style: double;
  border-width: 0px 0 0px 8px;
}