<!DOCTYPE html> <html> <head> <style> .box{ 300px; height: 100px; background-color: red; display: -webkit-box; display: -moz-box; display: box;} .siblings-left{ -webkit-box-flex: 4; -moz-box-flex: 4; box-flex: 4; background-color: green;} .siblings-right{ -webkit-box-flex: 2; -moz-box-flex: 2; box-flex: 2; background-color: blue;} </style> </head> <body> <div class="box"> <div class="siblings-left"></div> <div class="siblings-right"></div> </div> </body> </html>
均分，高版本可代替float
IE高低版本据不支持