DEMO 以支持所有具备功能的浏览器

  body {
 background-color：#ffffff; 
 background-image：-webkit-gradient（linear，left top，left bottom，from（#ffffff），to（＃999999））; 
 background-image：-webkit-linear-gradient（top，#ffffff，＃999999）; 
 background-image：-moz-linear-gradient（top，#ffffff，＃999999）; 
 background-image：-o-linear-gradient（top，#ffffff，＃999999）; 
 background-image：linear-gradient（to bottom，#ffffff，＃999999）; 
} 
 

CSS3请可能有用

Is this right to apply gradient background to the body from a light shade of grey to white from bottom to top?

body {
    background: -webkit-gradient(linear, bottom, top, from(#e7e7e7, to(#ffffff));
}

DEMO to support all capable browsers

body {
  background-color: #ffffff;
  background-image: -webkit-gradient(linear, left top, left bottom, from(#ffffff), to(#999999));
  background-image: -webkit-linear-gradient(top, #ffffff, #999999);
  background-image:    -moz-linear-gradient(top, #ffffff, #999999);
  background-image:      -o-linear-gradient(top, #ffffff, #999999);
  background-image:         linear-gradient(to bottom, #ffffff, #999999);
}

CSS3 Please might be useful