nav {
    height 47;
    line-height 47;
}

nav i,
nav [class^=mdi-],
nav [class=mdi-],
nav i.material-icons {
    height 47;
    line-height 47;
}

nav .button-collapse i {
    height 47;
    line-height 47;
}

nav .brand-logo {
    font-size 1.6rem;
}

@media only screen and (min-width 601px) {

    nav,
    nav .nav-wrapper i,
    nav a.button-collapse,
    nav a.button-collapse i {
        height 47;
        line-height 47;
    }
}

.brand-logo {
    max-height 47px;
}