<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>inline and block boxes</title>
<style>
div { width: 250px;
margin-bottom: 5px;
border: 2px solid blue;
}
#taller { height: 50px;
}
#shorter { height: 25px;
}
#parent { height: 100px;
}
#child { height: 50%;
width: 75%;
}
</style>
</head>
<body>
<div id="taller">I'm 50 pixels tall.</div>
<div id="shorter">I'm 25 pixels tall.</div>
<div id="parent">
<div id="child">I'm half the height of my parent.</div>
</div>
</body>
</html>
