.nav-menu {
    .arrow-up-icon,
    .arrow-down-icon {
        position: absolute;
        top: 0;
        right: 15px;
        z-index: 1;
        transition: .3s ease;
    }
    .sub-navs,
    .arrow-up-icon {
        display: none;
    }
    &:hover {
        background: #272b2f;
        .sub-navs,
        .arrow-up-icon {
            display: block;
        }
        .arrow-down-icon {
            display: none;
        }
    }
}