.centered_list > li {
    display: flex;
    flex-direction: column;
    margin: auto;
    padding: 15px;
    max-width: 900px;

    gap: 20px;
    margin-bottom: 4em;
}

.gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

@media (max-width: 600px) {
    .gallery {
        grid-template-columns: 1fr;
    }

    h2 {
        margin: 0;
    }
}