color gradient

gradient.css

#colorbox {
    background: #629721;
    background-image: -webkit-gradient(linear, left top, left bottombottom, from(#83b842), to(#629721));
    background-image: -webkit-linear-gradient(top, #83b842, #629721); 
    background-image: -moz-linear-gradient(top, #83b842, #629721);
    background-image: -ms-linear-gradient(top, #83b842, #629721);
    background-image: -o-linear-gradient(top, #83b842, #629721);
    background-image: linear-gradient(top, #83b842, #629721);
}