Mastering CSS Gradients in Under an Hour

This is the basic syntax: #wd {
background: vendor-type-gradient( start / position , shape size, color 1, color2 [position] [, other colors / positions] );
/*** real example **/

background: -moz-linear-gradient( top left, red, #c10000, #ae0000 );

background: -webkit-linear-gradient( top left, red, #c10000, #ae0000 );

background: -o-linear-gradient( top left, red, #c10000, #ae0000 );

background: -khtml-linear-gradient( top left, red, #c10000, #ae0000 );

background: -ms-linear-gradient( top left, red, #c10000, #ae0000 );

background: linear-gradient( top left, red, #c10000, #ae0000 );
}

Here is an example making use of color positions:

#wd {

background: -moz-linear-gradient( top left, white, black 25% );

background: -webkit-linear-gradient( top left, white, black 25% );

background: -o-linear-gradient( top left, white, black 25% );

background: -khtml-linear-gradient( top left, white, black 25% );

background: -ms-linear-gradient( top left, white, black 25% );

background: linear-gradient( top left, white, black 25% );
}