body {
    margin: 0;
    padding: 2rem 4rem;
    font-family: Arial, sans-serif;
    line-height: 1.5;
    color: #333333;
    background-color: #e0e0e0;
}

main {
    max-width: 700px;
    margin: 0 auto;
}

h1, h2, h3 {
    line-height: 1.3;
    color: #134c41;
}