<html>
<head>
<style>
a:focus{position:relative;}
button span{display:block;}
button{display:inline-block;)
</style>   
</head>
<body>
<p>Start</p>
<div>
<p>Line 1</p>
<a href="foo"><button><span>&nbsp; Line 2 &nbsp;</span></button></a> &nbsp;&nbsp;
<p>Line 3</p>
</div>
<p>End</p>
</body>
</html>