<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>demo</title> <style type="text/css" media="screen"> .button-list{ padding: .1rem; overflow: hidden } .button-wrapper{ width:33.33%; float: left } .button{ padding: .1rem; border: .02rem solid #ccc; text-align: center } </style> </head> <body> <div>123</div> <div class="button-list"> <div class="button-wrapper"> <div class="button"> 北京 </div> </div> <div class="button-wrapper"> <div class="button"> 北京 </div> </div> <div class="button-wrapper"> <div class="button"> 北京 </div> </div> </div> <div>123</div> </body> </html>
css 之 float 时给父元素 加 overflow: hidden
原文：https://www.cnblogs.com/xuwupiaomiao/p/12152034.html