6 border: 3px solid black;
13 box-sizing: border-box;
15 .left { float: left; }
16 .right { float: right; }
18 .blue1 { background-color: skyblue; }
19 .blue2 { background-color: dodgerblue; }
20 .blue3 { background-color: steelblue; }
22 .column1, .column2, .column3 {
30 .column1 > .f1 { height: 120px; }
31 .column1 > .f2 { height: 160px; }
33 .column2 > .f1 { height: 200px; }
34 .column2 > .f2 { height: 60px; }
35 .column2 > .f3 { height: 160px; }
37 .column3 > .f1 { height: 100px; }
38 .column3 > .f3 { height: 60px; }
42 <p>There should be three tall floats, each of which should extend
43 into the next column (F2, F3) or into all columns (F1).</p>
44 <div class="multicol">
48 <div class="right blue1 f2">F2</div>
51 <div class="left blue2 f1">F1</div>
61 <div class="right blue1 f2"></div>
62 <div class="left blue2 f1"></div>
65 <div class="left blue3 f3">F3</div>
76 <div class="left blue2 f1"></div>
77 <div class="left blue3 f3"></div>