.main_nav span.number {
    background-color: #f2f2f2;
    border-radius: 6px;
    padding: 6px 10px;
    margin-left: 6px;
}
.main_nav:hover a span, .main_nav:hover a i {
    color: var(--darker-primary-color);
}
.main_nav:hover a span {
    border-bottom: 1px solid var(--darker-primary-color);
}

.main_nav:hover a span.number {
    border-bottom: none;
}