3 p { font:
16px monospace; white-space: pre; }
4 span { background-color: lime }
6 <p><span>a b
</span></p>
7 <p><span>a b
</span></p>
8 <p><span>a b
</span></p>
9 <p><span> a b
</span></p>
10 <p><span>a
</span></p>
13 <p><span>.
</span></p>
14 <p><span>a b
</span></p>
15 <p><span>a b
</span></p>
16 <p><span> a b
</span></p>
17 <p><span>a
</span></p>
20 <p><span>.
</span></p>