*{
  margin: 0;
  padding: 0;
}

body{
	padding: 20px;
	background: #ccc;
	font-family: "HelveticaNeue-Light", Arial, Helvetica, Geneva, sans-serif;
}

h1{
	margin-bottom: 1em;
}

div#wrapper{
	width: 600px;
	margin: 0 auto;	
	padding: 40px 20px;
	background: white;
}

div#hidden-content {
  border: 3px solid #ccc;
  margin-top: 1em;
  padding: 10px;
}


a.collapsible { 
	padding-left: 16px;
	background: url(arrow-right.png) left center no-repeat; 
	margin-left: -4px;
}

a.active.collapsible { 
background-image: url(arrow-down.png); }