1、添加style标签：<style type="text/css" ></style>
2、添加选择器，例如：<style type="text/css" >body { }</style>
3、添加图片路径，例如：<style type="text/css" >body {background-image:url("/images/background.jpg"); }</style>
4、取消图片的重复排列：<style type="text/css" >body {background-image:url("/images/background.jpg");background-repeat:no-repeat ; }</style>
5、设置背景图片大小：<st鲻戟缒男yle type="text/css" >body {background-image:ur造婷用痃l("/images/background.jpg");background-repeat:no-repeat ;background-size:100% 100%; }</style>
6、固定图片：<style type="text/css" >body {background-image:url("/images/background.jpg");background-repeat:no-repeat ;background-size:100% 100%;background-attachment: fixed; }</style>
