@media only screen and (max-width: 1023px) {
    .page-header.kxm-project-header {
        position: -webkit-sticky;
        position: sticky;
        top: 0;
        z-index: 3000;
        width: 100%;
    }

    .kxm-project-header #header-nav {
        max-height: calc(100vh - 60px);
        max-height: calc(100dvh - 60px);
        overflow-y: auto;
        overscroll-behavior: contain;
    }
}