CSS固定图片或元素在屏幕右下角
固定图片：
body{
background-image:url(http://coding.imweb.io/img/project/blog/bg.jpg);background-position:right bottom;
background-repeat :no-repeat;
background-attachment:fixed;
background-color: white;
}
固定元素：
background-position:right bottom;
background-repeat :no-repeat;
background-attachment:fixed;
background-color: white;