This requires the following elements:
line-height: NUMBERpx;
vertical-align: middle;
Here’s an example:
#header {
background-color: #000;
background-image: url('cosby.jpg');
background-repeat: no-repeat;
vertical-align: middle;
line-height: 72px;
color: #fff;
font-size: 30px;
font-family: Georgia, serif; }