body {
    line-height: 1.6;
    margin: 20px;
}

h1, h2 {
    color: #333;
}

h1 {
    border-bottom: 2px solid #333;
    padding-bottom: 5px;
}

p, ul, ol {
    color: #555;
    font-size: 16px;
    margin-bottom: 15px;
}

ul, ol {
    margin-left: 20px;
}

a {
    color: #007BFF;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

@media only screen and (max-width: 600px) {
    body {
        margin: 10px;
    }

    h1 {
        font-size: 24px;
    }

    p, ul, ol {
        font-size: 14px;
    }
}