.sticky {
    position: fixed;
    top: 0;
    left: var(--width-sidenav);
    /*width: 100%;*/
    z-index: 1000;
    transition: .5s all ease-in-out;
}
.main-header-scroll.sticky {
    display: block;
    position: fixed;
    padding: 20px 0;
    transition: .5s all ease-in-out;
}