老式浏览器不认识html5和CSS3 1029

HTML5

<!--[if IE]>

  <script src="http://cdn.bootcss.com/html5shiv/r29/html5.js"></script>

<![endif]-->

CSS3的圆角和阴影

file:///C:/Users/Administrator/Desktop/homework/0924/picture/rabbit.html

需要再文件夹里放  ie-css3.htc

behavior: url(ie-css3.htc)

让圆角和shallow 在IE里好用