body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(to bottom, #4a148c, #7b1fa2);
    color: #fff;
}

header {
    text-align: center;
    padding: 20px;
}

header img {
    max-width: 200px;
}

nav {
    display: flex;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    padding: 10px 0;
}

nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

.banner {
    width: 100%;
    height: 600px;
    background: url('banner.jpg') no-repeat center center;
    background-size: cover;
}

section {
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.1);
    margin: 20px;
    border-radius: 10px;
    line-height: 1.6;
}

footer {
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    text-align: center;
    padding: 20px 0;
    position: relative;
    bottom: 0;
    width: 100%;
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
    }

    nav a {
        margin: 5px 0;
    }

    .banner {
        height: 300px;
    }
}