.fat-nav {
    background: #000000;
    background: -moz-linear-gradient(top, #000000 0%, #1c39b7 100%);
    background: -webkit-linear-gradient(top, #000000 0%,#1c39b7 100%);
    background: linear-gradient(to bottom, #000000 0%,#1c39b7 100%);
    background: linear-gradient(90deg, rgba(0,0,0,.9), rgba(28,57,183,.9));
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#000000', endColorstr='#1c39b7',GradientType=0 );
}