main {
    max-width: 550px;
    margin: 0 auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

header {
    border-bottom: 3px solid rgb(23, 142, 61);
}

header>p {
    font-size: 0.9rem;
}

blockquote {
    font-style: italic;
}

main p {
    line-height: 1.4rem;
}