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

header {
    background-color: #4CAF50;
    color: white;
    padding: 15px;
    text-align: center;
}

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

nav ul li {
    display: inline;
    margin-right: 20px;
}

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

main {
    padding: 20px;
}

#hero {
    background: url('banner.jpg') no-repeat center center;
    background-size: cover;
    padding: 100px 20px;
    text-align: center;
    color: white;
}

#hero .cta-button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
}

#featured-video, #about, #library, #support, #final-warning {
    margin: 20px 0;
}

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

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

footer ul li {
    display: inline;
    margin-right: 10px;
}

footer ul li a {
    color: white;
    text-decoration: none;
}