Untitled

span.nav-tab__tab {
    background: transparent;
    border: 1px solid #fff;
    color: #fff;
    &:hover{
        background: #fff;
        border: 1px solid #fff;
        color: #000;
    }
}

span.nav-tab__tab.active {
    background: #fff;
        border: 1px solid #fff;
        color: #000;
}

.population-age__hint {
    color: #fff!important;
}