SovBundle/Resources/assets/app/adminlte/common/scss/_common.scss

nav.main-header {
  ul.navbar-nav {
    li.nav-item-user-menu {
      .dropdown-menu {
        position: absolute ;
        z-index: 1000 ;
      }
    }

    li.nav-item {
      margin-left: 10px;

      .btn {
        margin-top: 7px;
      }
    }
  }
}