body {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background-color: #f4f4f9;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}
nav {
    width: 100%;
    background-color: #2c3e50;
    padding: 1rem 0;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 2rem;
}
nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}
nav ul li a:hover {
    text-decoration: underline;
}
main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}