My height line isn't working?


I've been working on this code for the past few days and I can't seem to figure out why it isn't working. This is it:
.nav a { color: #5a5a5a; font-size: 11px; font-weight: bold; padding-top: 14px; padding-bottom: 14px; padding-left: 10px; padding-right: 10px; text-transform: uppercase;
.jumbotron {
background-image: url('');
height: 500px;
It keeps saying that I haven't set the .jumbotron height to 500px and I don;t know what to do anymore. Please Help!


Try closing the } for .nav a