body {
  
    /*加载图片*/
   background-image: url(https://www.bing.com/th?id=OHR.TulipFieldsDE_ZH-CN8685077552_UHD.jpg&rf=LaDigue_UHD.jpg&pid=hp&w=3840&h=2160&rs=1&c=4);
   background-size: 100%;
  background-repeat: no-repeat;
  font-family:"微软雅黑","宋体",Arial;
    /*水平垂直居中*/
    background-position: center, center;
    /*图片不平埔*/
    background-repeat: no-repeat;
    /*图片位置固定在窗口中*/
    background-attachment: fixed;
    /*图片填充*/
    background-size: cover;

}