/* 1rem = 16px by default */

.page {
    max-width: 64rem;
    margin: 1rem auto;
    display: grid;
    grid-template-areas:
      "header"
      "body"
      "footer";
    grid-template-columns: minmax(0, 1fr); /* https://css-tricks.com/preventing-a-grid-blowout/ */
    grid-row-gap: 2rem;
}

/* Header */
.page__header {
    grid-area: header;
    display: flex;
}

/* Body */
.page__body {
    grid-area: body;
    background-color: var(--off-bg);
    box-shadow: 0 0 0 1rem var(--off-bg);
    overflow-wrap: break-word;
}

/* Footer */
.page__footer {
    grid-area: footer;
}