body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

header {
    background-color: #333;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

header h1 {
    margin: 0;
}

nav ul {
    background: #333;
    color: #fff;
    padding: 0;
    list-style: none;
    text-align: center;
}

nav ul li {
    display: inline;
    margin: 0 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
}

.content-section {
    padding: 20px;
    margin-top: 10px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.content-section h2 {
    border-bottom: 2px solid #333;
    padding-bottom: 10px;
    margin-bottom: 15px;
}

ul li {
    margin-bottom: 10px;
}

a {
    color: #3498db;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .container {
        width: 95%;
    }

    nav ul li {
        display: block;
        margin: 10px 0;
    }
}