plateforme-corres2math/assets/style.css

:root {
    --navbar-height: 32px;
}

#navbar-logo {
    height: var(--navbar-height);
    display: block;
}

ul .deroule {
    display: none;
    position: absolute;
    background: #f8f9fa !important;
    list-style-type: none;
    padding: 20px;
    z-index: 42;
}

li:hover ul.deroule {
    display:block;
}

a.nav-link:hover {
    background-color: #d8d9da;
}