footer {
    grid-column: main;
    grid-row: 3 / 4;
    text-align: center;
    font-style: italic;
    font-size: var(--font-size-16);
    align-self: end;
    position: relative;
}

footer:before {
    content: '';
    background: transparent url('../../img/line-bottom.png') top left repeat;
    height: 31px;
    width: 100%;
    position: absolute;
    top: -37px;
    left: 0;
    right: 0;
}