.sidebar {
    min-height: 100vh;
    background: #f8f8f8;
    border-right: 1px solid #ddd;
    padding-top: 20px;
}

.sidebar .nav > li > a {
    color: #333;
}

.sidebar .nav > li.active > a {
    background-color: #337ab7;
    color: #fff;
}