.darkGradient {
    background: -moz-linear-gradient(top,  rgba(0,0,0,0) 0%, rgba(0,0,0,0.75) 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(0,0,0,0)), color-stop(100%,rgba(0,0,0,0.75)));
    background: -webkit-linear-gradient(top,  rgba(0,0,0,0) 0%,rgba(0,0,0,0.75) 100%);
    background: -o-linear-gradient(top,  rgba(0,0,0,0) 0%,rgba(0,0,0,0.75) 100%);
    background: -ms-linear-gradient(top,  rgba(0,0,0,0) 0%,rgba(0,0,0,0.75) 100%);
    background: linear-gradient(to bottom,  rgba(0,0,0,0) 0%,rgba(0,0,0,0.75) 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00000000', endColorstr='#bf000000',GradientType=0 );
}