html {
    margin: 0;
    padding: 0;
}

body {
    min-width: 320px;
    margin: 0 auto;
    max-width: 40rem;
    padding: 0;
}

h1 {
    margin: 0;
    padding-block: .5rem;
    text-align: center;
}

footer,
section {
    padding: 0.25rem;
}

.cover {
    margin: 0;
    text-align: center;
}

.cover div {
    align-items: center;
    display: flex;
    justify-content: center;
}

.cover img {
    aspect-ratio: 1;
    width: 100%;
}