css 背景全屏

//背景全屏样式

background-image:url('http://youget.vip/ck/bz/4.jpeg');
background-repeat:no-repeat;
background-size: 100% 100%;
background-attachment: fixed;

用于验证。
var code = “2ea13999-6bae-4af5-9d39-1880fa5bb0a5”