.menu-group {
    text-align: center;
    margin-top: 20vh;
}

.menu-item {
    display: inline-block;
    font-family: "SimHei-Regular" !important;
    font-size: 18px;
    cursor: pointer;
    color: #2D2D2D;
    padding: 8px 15px;
    margin: 30px;
}

.menu-item:hover {
    color: #1890FF;
}

.menu-item .dropdown-menu li > a {
    padding: 10px 20px;
}

.menu-item .dropdown-menu li > a:hover {
    background-color: #1890FF;
    color: white;
}