body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 10px;
    background-color: #f4f4f4;
}

nav {
    width: 100%;
    background: #222;
    padding: 0 0 0 20px;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    height: 48px;
    margin-bottom: 10px;
    border-radius: 8px;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin-right: 24px;
    font-size: 16px;
    padding: 8px 0;
    transition: color 0.2s;
}

nav a:hover {
    color: #4fc3f7;
}

nav .nav-logo {
    color: #fff;
    margin: 0;
    padding-right: 10px;
    font-weight: 800;
}

main {
    max-width: 1800px;
    margin: 0 auto;
    background: #fff;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    color: #333;
}

iframe {
    width: 100%;
    height: 100vh;
    border: none;
    margin-top: 20px;
}