article {
	width:95%;
	margin: 0 auto;
}
article a {
	display:block;
}
article h1 {
	text-align:center
}
#illnesses {
	display:flex;
	flex-flow:row wrap;		
}
#illnesses div  {	
	min-width:150px;
	padding:10px;
	margin-bottom:10px;
	vertical-align:top;
	
}
#illnesses a:link, a:visited {
	margin: 0 5px;
}
#illnesses span {
	display:inline-block;
	text-align:center;
	border-bottom: 1px solid gainsboro;	
	padding: 5px 0;
	width:100%;
	background-color: whitesmoke
}