.appfooter {
    position: fixed;
    left: 0;
    right: 0;
    z-index: 1;
    bottom: 0;
    -webkit-transition: -webkit-transform 180ms linear;
    -o-transition: transform 180ms linear;
    transition: transform 180ms linear;
    contain: layout style
}

.appfooter.headroom--unpinned {
    -webkit-transform: translateY(100%) !important;
    transform: translateY(100%) !important
}