.nav {
    background-color: #448fff;
    margin: 0;
    padding: 0;
    padding-bottom: 4px;
    display: flex;
    justify-content: center;
}
.nav-tel {
    background-color: #448fff;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    display: none;
}
.nav-link {
    color: white;
    padding: 14px 20px;
    text-decoration: none;
    display: inline-block;
    display: block;
    transition: margin 0.5s;
}
@media (max-width: 440px) {
    .nav-tel {
        display: block;
    } 
    .nav {
        display: none;
    }
}
@media (min-width: 600px) { 
    .nav-link {
        margin-left: 1%;
    }
    .nav {
        justify-content: start;
    }
}