Use CSS to implement webpage background gradient code

Use CSS to implement webpage background gradientCodeAs follows:

1. gradient from top to bottom

Body {

Filter: progid: DXImageTransform. Microsoft. gradient (gradienttype = 0, startcolorstr = # ffffff, endcolorstr = #000000 )";
}

2. gradient from top left to bottom right
Body {

Filter: alpha (style = 1, opacity = 25, finishopacity = 100, startx = 50, finishx = 100, starty = 50, finishy = 100 );

Background-color: skyblue;

}
3. gradient from left to right

Body {

Filter: progid: DXImageTransform. Microsoft. gradient (gradienttype = 1, startcolorstr = # ffffff, endcolorstr = #000000 )";
}