CSS实现背景渐变

一、从上往下渐变
body{}{
FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=0,startColorStr=#ffffff,endColorStr=#000000)";
}
二、从左上至右下渐变
body{}{
FILTER: Alpha( style=1,opacity=25,finishOpacity=100,startX=50,finishX= 100,startY=50,finishY=100); 
background-color: skyblue;
}
三、从左往右渐变
body{}{
FILTER: progid:DXImageTransform.Microsoft.Gradient(gradientType=1,startColorStr=#ffffff,endColorStr=#000000)";
}