#a { grid-area: a; }
#b { grid-area: b; }
#c { grid-area: c; }
#d { grid-area: d; }
#e { grid-area: e; }

#grid {
    display: grid;
    grid-template-areas:
        "a a a a"
        "b c d e";

    grid-row-gap: 1rem;
}

@media (max-width: 512px) {
    #grid {
        grid-template-areas:
            "a a a"
            "b c d"
            "e e e";
    }
}

.btn__menu {
    max-width:  200px;
}