body {
    font-family: sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

header {
    background-color: #f0f0f0;
    padding: 20px;
    text-align: center;
}

header h1 {
    margin-bottom: 10px;
}

header button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

section {
    padding: 40px 20px;
    max-width: 800px;
    margin: 0 auto;
}

section h2 {
    margin-bottom: 20px;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    margin-bottom: 10px;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px;
}

/* Responsive Design */
@media (max-width: 600px) {
    header {
        padding: 10px;
    }

    section {
        padding: 20px 10px;
    }
}