.mobile-nav-link {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.dropdown-arrow {
    width: 20px;
    height: 20px;
    margin-left: 8px;
    transition: transform 0.3s;
}
.dropdown-arrow.active {
    transform: rotate(90deg);
}