body:before {
    content: '';
    position: absolute;
    width: 100%;
    height: 500px;
    left: 0;
    top: 0;
    z-index: -1;
    background: #77bfff;
    background: -moz-linear-gradient(top, #77bfff 0, #fff 100%);
    background: -webkit-linear-gradient(top, #77bfff 0, #fff 100%);
    background: linear-gradient(to bottom, #77bfff 0, #fff 100%);
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#77bfff', endColorstr='#ffffff', GradientType=0);
}