.bio {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 11px;
	color: #FFFFCC;
}

.nav a {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
	color: #FFFFCC;
	font-weight: bold;
	margin-right: 3px;
	display: block;
	text-decoration: none;
}

.nav a:hover {
text-decoration: underline;
}
<a href="images/image-1.jpg" rel="lightbox" title="my caption">image #1</a>
rel="lightbox"