.sidebar {
    position: fixed;
    top: 72px;
    left: 0;
    width: 260px;
    height: 100%;
    background: #fff;
    border-right: 1px solid #eee;
    padding: 20px;
    overflow-y: auto;
    z-index: 99;
}


.brand {
    font-weight: bold;
    font-size: 18px;
    margin-bottom: 25px;
}

.nav-item {
    padding: 12px 10px;
    border-radius: 10px;
    cursor: pointer;
    margin-bottom: 5px;
    transition: 0.2s;
}

.nav-item:hover {
    background: #f2f2f2;
}

.nav-item.active {
    background: #000;
    color: #fff;
}