body { font-family:Helvetica,Arial,Helmet,Freesans,sans-serif; color: #666;}
	#usable { margin: 90px auto; width: 500px; text-align: center;}
	#boiler { text-align: left;}
	h1 { margin: 20px 0 0;  font-weight: normal; font-size: 22px;}
	h2 { margin: 20px 0 0;  font-weight: normal; font-size: 18px;}
	p { color: #333; font-size: 13px;}