<style type="text/css"> ???body{ ???????margin: 0; ???} ???.zhan{ ???????width: 100%; ???????height: 500px; ???????background: pink; ????} ????.bigbg{ ???????background: url(https://image.metinfo.cn//templates/metinfo2016/min/img/index/logowall.jpg); ???????height: 500px; ???????background-attachment: fixed; ????}</style><div id="box"> ???<div class="zhan"></div> ???<div class="bigbg"></div> ???<div class="zhan"></div></div>
background-attachment css3属性
原文地址：http://www.cnblogs.com/xianxianxxx/p/8066133.html