Font size issue

Nate, your link comes back

Not found, error 404

The page you are looking for no longer exists. Perhaps you can return back to the site’s homepage and see if you can find what you are looking for. Or, you can try finding it by using the search form below.

OK your first link is this:

”http:/nathanagoodman.com/fourteen/”

/* Typographical Elements
--------------------------------------------- */

html {
	font-size: 14px;
}

body {
	background: #f2f2f2;
	color: #333;
	font-family: 'Open Sans',"Helvetica Neue", Helvetica, Arial, sans-serif;
	font-size: 16px;
	font-weight: 300;
	line-height: 1.625;
}

Your existing code says “100%” which is making it fill up the available space. If you want it to be as the demo site, change it back to 14px or something you prefer size wise.

Your header image does not size on small screens so you might add this as well to your .css

.header-image .site-title a {		
    background-size: contain !important;