nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    padding: 0.5em 1.1em;
    background-color: white;
    border-top: 1px solid lightgray;
}

nav > *:nth-child(1) {
    justify-self: start;
}

nav > *:nth-child(2) {
    justify-self: center;
}

nav > *:nth-child(3) {
    justify-self: end;
}