body {
    background-color: #f5f7fb;
}

.sidebar {
    width: 240px;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
}

.sidebar .nav-link {
    font-size: 16px;
    padding: 10px 20px;
    border-radius: 6px;
}

.sidebar .nav-link.active,
.sidebar .nav-link:hover {
    background-color: #2563eb;
}

.content {
    margin-left: 240px;
    width: calc(100% - 240px);
}