.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 80vw;
    max-width: 320px;
    background: var(--color-white);
    box-shadow: 2px 0 16px var(--box-shadow-color);
    z-index: 1051;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(.4,0,.2,1);
    overflow-y: auto;
}
.mobile-menu.open {
    transform: translateX(0);
}
.mobile-menu-overlay {
    display: none;
    position: fixed;
    z-index: 1050;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--box-shadow-color);
}
.mobile-menu-overlay.active {
    display: block;
}