body {
    background: #eee;
    margin: 10vh;
}
.page {
    height: 80vh;
    background: white;
    aspect-ratio: 210/297;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(8, 1fr);
}
#wtf {
    background: pink;
}
img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}