ninecompta/assets/styles/app.css

html,
body {
    height: 100%
}

body {
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.form-group {
    margin-bottom: 5px;
}

.navbar-brand img {
    width: 40px;
    margin-right: 10px;
}

.navbar-toggler {
    border: none;
    box-shadow: none !important;
}

main {
    display: flex;
    flex-grow: 1;
    align-items: stretch;
}

sidebar {
    width: 300px;
    padding: 15px;
    background-color: rgba(var(--bs-dark-rgb));
    display: flex;
    flex-direction: column;
}

sidebar div {
    display: flex;
    flex-direction: column;
    border-bottom: 1px solid var(--bs-body-color);
    padding-bottom: 10px;
}

sidebar a {
    text-decoration: none;
    color: var(--bs-body-color);
    ;
    opacity: 0.6;
    margin: 5px 0px;
}

sidebar a:hover {
    text-decoration: none;
    opacity: 1;
}

content {
    flex-grow: 1;
    align-items: stretch;
    padding: 15px;
}

@media (max-width: 991px) {
    sidebar {
        width: 70px;
    }

    sidebar i {
        font-size: 200%;
    }

    sidebar span {
        display: none;
    }
}