Original from: html5 mobile web developers real page 83
If you want to IE9 or other iE version supports css3, css3 PIE (http://css3pie.com) can help you
Download PIE file, by way of including it into your CSS style rules:
-pie-bakcgourn:linear-gradient(top,#eeeeee 0%,#cccccc 100%); /*PIE*/ behavior:url(PIE.htc);
PIE supported features are:
■ ■ border-radius frame ■ shadows ■ picture ■ css3 background linear gradient ■ RGBA color values of custom properties ■ PIE
Reproduced in: https: //www.cnblogs.com/positive/p/3972501.html