5 div { float:left; border:
2px solid black; height:
200px; }
6 div.clear { clear:both; }
7 span { display:inline-block; width:
100px; }
8 span.gap { width:
80px; }
13 <span></span><span></span>
16 <span></span><span class=
"gap"></span><span></span>