body {
    font-family: Arial;
    font-weight: bold;
    margin: 0;
    width: calc(41cm + 1px + 1em);
}

section {
    background-color: #ddd;
    padding: 1em;
}

.pages {
    display: flex;
    gap: 1px;
}

.page {
    width: 20.5cm;
    height: 20.5cm;
    background-color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}