body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f7fa;
    margin: 0;
    padding: 0;
    color: #333;
}

header {
    background-color: #2c7da0;
    color: white;
    text-align: center;
    padding: 20px;
}

nav {
    background-color: #145374;
    display: flex;
    justify-content: center;
    padding: 10px;
}

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

nav a:hover {
    color: #ffcc00;
}

main {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    margin: 20px;
}

section, article, aside {
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0px 2px 6px rgba(0,0,0,0.1);
}

footer {
    background-color: #2c7da0;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 20px;
}

/* Imágenes y videos */
img, video {
    max-width: 100%;
    border-radius: 8px;
    margin: 10px 0;
}