nav {
    color: lightgray;
    text-align: center;
    line-height: 150%;
    width: 100%;
}
nav.grid-container {
    display: inline-grid;
    grid-template-columns: auto auto auto auto auto auto auto;
}
nav.uniformly-spaced {
    display: flex;
    /* also: space-between, space-around, space-evenly */
    justify-content: space-around;
}
footer {
    color: lightgray;
    text-align: center;
    line-height: 150%;
    width: 100%;
}
/* old */
footer.grid-container {
    display: inline-grid;
    grid-template-columns: auto auto;
}
/* new */
footer.uniformly-spaced {
    display: flex;
    /* also: space-between, space-around, space-evenly */
    justify-content: space-around;
}