.menu-o-nas {
  position: relative;
}

.menu-o-nas .nav__submenu {
  left: 0;
  width: 180px!important;
}

.menu-o-nas .nav-sitemap__inner {
  padding: 20px!important;
}

.menu-o-nas .nav-sitemap__list {
  flex-direction: column;
}