I am trying to do some projects in my HTML book, and for one exercise I need to move embedded css to an external stylesheet before continuing on in the exercises. For some reason the external CSS is not being picked up even though in previous exercises I have never had this problem.
This is the html
<!DOCTYPE html>
<html lang="en">
<head>
<title>Lighthouse Island Bistro</title>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="lighthouse.css" media="screen">
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js">
</script>
<![endif]-->
</head>
<body>
<div id="wrapper">
<header role="banner">
<h1>Lighthouse Island Bistro</h1>
</header>
<nav role="navigation">
<ul>
<li><a href="index.html">Home</a></li>
<li><a href="menu.html">Menu</a></li>
<li><a href="map.html">Map</a></li>
<li><a href="contact.html">Contact</a></li>
</ul>
</nav>
<main role="main">
<h2>Locally Roasted Free-Trade Coffee</h2>
<p>Indulge in the aroma of freshly ground roast coffee. Specialty drinks are available hot or cold.</p>
<h2>Specialty Pastries</h2>
<p>Enjoy a selection of our fresh-baked, organic pastries, including fresh-fruit muffins, scones, croissants, and cinnamon rolls.</p>
<img src="lighthouseisland.jpg" width="250" height="355" id="floatright" alt="Lighthouse Island">
<h2>Lunchtime is Anytime</h2>
<p>Savor delicious wraps and sandwiches on hearty, whole-grain breads with locally-grown salad, fruit, and vegetables. </p>
<h2>Panoramic View</h2>
<p>Take in some scenery!</p>
<p>The top of our lighthouse offers a panoramic view of the countryside.
Challenge your friends to climb our 100-stair tower.</p>
</main> <!-- end of main content -->
<footer role="contentinfo">Copyright © 2016
</footer>
</div> <!-- end of wrapper -->
</body>
</html>
And the CSS
header, nav, main, footer, figure, figcaption { display: block; }
* {box-sizing: border-box; }
body { font-family: Verdana, Arial, sans-serif;
background-color: #00005D;
}
#wrapper { background-color: #b3c7e6;
color: #000066;
width: 80%;
margin: auto;
min-width:850px;
}
header { background-color: #869dc7;
color: #00005D;
font-size: 150%;
padding: 10px 10px 10px 155px;
background-image: url(lighthouselogo.jpg);
background-repeat: no-repeat;
}
nav { float: right;
width: 150px;
letter-spacing:0.1em;
font-weight: bold;
}
nav ul { list-style-type: none;
margin: 0;
padding: 0;
}
nav a { text-decoration: none;
display: block;
padding: 20px;
background-color: #b3c7e6;
border-bottom: 1px solid #ffffff;
background-image: url(sprites.gif);
background-repeat: no-repeat;
background-position: right 0;
}
nav a:link { color: #ffffff; }
nav a:visited { color: #eaeaea; }
nav a:hover { background-color: #eaeaea;
color: #869dc7;
background-position: right -100px; }
main { background-color: #ffffff;
color: #000000;
padding: 10px 20px;
overflow: auto;
}
h1 { margin-bottom: 20px; }
h2 { color: #869dc7;
font-family: arial, sans-serif;
}
#floatright { margin: 10px;
float: right;
}
footer {font-size:70%;
text-align: center;
padding: 10px;
background-color: #869dc7;
clear: both;
}
All I am trying to do at this point is get my HTML to recognize the external stylesheet so I can move on to a farther point. Any aid or guidance to finding the answer to this exercise would be greatly appreciated.