css_box_model.html

<!DOCTYPE html>
<html>
	<head>
		<title>Box Model Exercise</title>
		<link rel="stylesheet" href="css/box_model.css">
	</head>
	<body>
		<h1><a href="https://en.wikipedia.org/wiki/Visible_spectrum">Visible Spectrum Wavelengths</a></h1>
		<div class="colorbox" id="box-red">620-750 nm</div>
		<div class="colorbox" id="box-orange">590-620 nm</div>
		<div class="colorbox" id="box-yellow">570-590 nm</div>
		<div class="colorbox" id="box-green">495-570 nm</div>
		<div class="colorbox" id="box-blue">450-495 nm</div>
		<div class="colorbox" id="box-purple">380-540 nm</div>
	</body>
</html>