.content h1 {
	font-family: Helvetica, Arial, sans-serif;
	background-color: #e9e9e9;
	border-bottom: 1px solid silver;
}
.content h2 {
	font-family: Helvetica, Arial, sans-serif;
	background-color: #efefef; 
	border-bottom: 1px solid silver;
}
.content h3 {
	font-family: Helvetica, Arial, sans-serif;
}
.content h4 {
	font-family: Helvetica, Arial, sans-serif;
}