body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 20px;
    background-color: #f9f9f9;
    color: #333;
}

h1,
h2 {
    text-align: center;
    color: #444;
}

h1 {
    font-size: 2.5em;
    margin-bottom: 20px;
}

h2 {
    font-size: 2em;
    margin-top: 40px;
    margin-bottom: 20px;
}

p {
    font-size: 1.1em;
    margin-bottom: 15px;
}

a {
    color: #0070c9;
    text-decoration: none;
}

a :visited {
    color: #0070c9;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }

    h2 {
        font-size: 1.5em;
    }

    p {
        font-size: 1em;
    }

    .container {
        padding: 15px;
    }
}