.horizontal-sidebar {
    background-color: white !important;
    padding: 10px 0;
 }
 
 .horizontal-sidebar .nav {
    background-color: white !important;
    display: flex;
    justify-content: center;
    align-items: center;
 }
 
 .horizontal-sidebar .nav-link {
    background-color: #1f3e7a;
    color: #ffffff;
    padding: 15px 25px;
    text-decoration: none;
    font-size: 1.2em;
    margin: 5px;
    border-radius: 5px;
    transition: background-color 0.3s ease, color 0.3s ease;
 }
 
 .horizontal-sidebar .nav-link:hover {
    background-color: #3c5a99;
    color: #ffffff;
 }
 
 .horizontal-sidebar .nav-link.active {
    background-color: #0056b3;
    color: #ffffff;
 }