| <!DOCTYPE html> | |
| <style> | |
| .container { | |
| border: solid 2px; | |
| display: flow-root; | |
| width: 300px; | |
| } | |
| .child { | |
| background: green; | |
| border: solid 2px; | |
| box-sizing: border-box; | |
| float: left; | |
| height: 100px; | |
| } | |
| </style> | |
| <div class="container"> | |
| <div class="child" style="width: 100px;"></div> | |
| <div class="child" style="width: 200px;"></div> | |
| </div> |