<html> <head> </head> <body> <div style="width:200px; overflow:hidden;"> <div style="float:left; width:100px; height:100px; background:#f00;"> </div> <div style="float:left; width:100px; height:50px; background:#0f0;"> </div> <div style="float:left; width:100px; height:50px; background:#00f;"> </div> </div> </body> </html>
右侧放不下连才会往下放：
原文：http://my.oschina.net/u/861926/blog/415602