#posts {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.post {
    color: inherit;
    width: 400px;
}

.post:visited {
    color: inherit;
}

.created-at {
    font-size: 10px;
    color: #333;
}

@media (max-width: 750px) {
    .post {
        width: 75vw;
    }
}