.abovefold {
    position: relative;
}

    .abovefold::after {
        content: "";
        background: url('https://static.fo.unc.edu/images/backgrounds/iirm-banner-background.png') repeat-x;
        opacity: 0.2;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
        position: absolute;
        z-index: -1;
    }

.navbar-default {
    background-color: #007fae;
    border-bottom-color: #007fae;
}

    .navbar-default .navbar-nav > li > a:focus, .navbar-default .navbar-nav > li > a:hover {
        background-color: #515151 !important;
    }