4 .float { float: left; width:
100px; height:
100px; background-color: green }
5 .normal { width:
100px; height:
100px; background-color: green }
6 #container { width:
200px; height:
100px; background-color: red }
7 .negleft { margin-left: -
50px; }
8 .block { display: block; overflow:hidden; }
10 <p> There should be no red.
</p>
12 <div class=
"float"></div>
13 <div class=
"block normal negleft"></div>