* {
	font-family: verdana, arial, sans-serif; 
}
h1 {
	text-align: center; 
	font-size: 18px; 
}
h2 {
	font-size: 12px; 
}
/* Drei Spuren nebeneinander */
div.track {
	width: 33.3%;
	float: left; 
}
/* Spuren mittig */
div.track * {
    margin-left: auto;
    margin-right: auto;
}
div.track h2, div.track button {
	display: table; 
}
/* Schieberegler */
div.track div.slider {
	height: 250px; 
}
/* Griff Schieberegeler */
div.track div.slider span {
	width: 50px; 
	margin-left: -15px; 
}
/* Record-Button */
div.track button {
	margin-top: 20px; 
	background-color: red; 
	color: red; 
	width: 60px; 
	height: 60px; 
	border-radius: 30px; 
}