SpaceNinjaServer/static/webui/style.css

@media (min-width: 992px) {
    body.logged-in #main-view {
        display: flex;
    }

    body.logged-in #sidebar {
        position: sticky;
        top: 5rem;
        height: 100px;
        margin-right: 3rem;
    }

    body:not(.logged-in) #sidebar {
        display: none;
    }
}

body:not(.logged-in) .navbar-toggler,
body:not(.logged-in) .nav-item.dropdown,
body:not(.logged-in) #refresh-note {
    display: none;
}