body {
    margin: 0;
    font-family: Arial, sans-serif;
}

header {
    background-color: #333;
    color: white;
    padding: 15px 0;
    text-align: center;
}

section {
    padding: 20px;
}

footer {
    background-color: #333;
    color: white;
    padding: 10px 0;
    text-align: center;
}

.menu {
    list-style-type: none;
    padding: 0;
    margin-bottom: 20px;
}

.menu li {
    display: inline;
    margin: 0 10px;
}

.menu a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.menu a:hover {
    color: #007bff;
}

.container {
    max-width: 800px;
    margin: auto;
    padding: 20px;
}

.card {
    background: #f9f9f9;
    border-radius: 8px;
    margin-top: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.card h2 {
    margin-top: 0;
    color: #222;
}

.card p {
    color: #666;
}

.cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 30px;
}

.card:nth-child(even) {
    margin-left: 20px;
}