#sidebar_first .menu--oldalmenu {
    background: #345995;
    border-radius: 12px;
    overflow: hidden;
    padding: 15px 0;
}

#sidebar_first .nav {
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
}

#sidebar_first .nav-item {
    display: block;
    width: 100%;
    list-style: none;
}

#sidebar_first .nav-link {
    display: block;
    padding: 12px 20px;
    color: #fff;
    text-decoration: none;
}

#sidebar_first .nav-link:hover,
#sidebar_first .nav-link.is-active,
#sidebar_first .nav-link[aria-current="page"] {
    color: #a3d3ff;
}