.fat-nav {
    background: #a170af;
    background: -moz-linear-gradient(top, #a170af 0%, #9fbcce 100%);
    background: -webkit-linear-gradient(top, #a170af 0%,#9fbcce 100%);
    background: linear-gradient(to bottom, #a170af 0%,#9fbcce 100%);
    background: linear-gradient(90deg, rgba(161,112,175,.9), rgba(159,188,206,.9));
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#a170af', endColorstr='#9fbcce',GradientType=0 );
}