nav#mainNav {
    display: none;
}
@media (max-width: 767px){
body .index-footer-sub-master {
    position: fixed !important;
    text-align: center;
    margin-top: 26px;
}
}

@media (max-width: 780px) {
    body {
    overflow-x: hidden;
    overflow-y: hidden;
}
}