.nav-link {
    position: relative;
    margin: 10px;
    color: white;
    font-weight: 400;
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 1px;
}
.nav-link:hover{
    color: #fffdfd;
}
.nav-link::after{
    content: '';
    height: 1px;
    width: 0;
    background: #ffffff;
    position: absolute;
    left: 0;
    bottom: 0;
    transition: 0.5s;

}
.nav-link:hover::after{
    width: 100%;
}