1)关键字:background-position: top left;
2)像素:background-position: 0px 0px;
3)百分比:background-position: 0% 0%;
http://www.ruanyifeng.com/blog/2008/05/css_background_image_positioning.html
yushouling 2016-02-17 15:59 原文
1)关键字:background-position: top left;
2)像素:background-position: 0px 0px;
3)百分比:background-position: 0% 0%;
http://www.ruanyifeng.com/blog/2008/05/css_background_image_positioning.html