* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: #0a0a0a;
    color: #fff;
}

header {
    background-color: #006cfb;
    padding: 20px;
    text-align: center;
}

header img {
    max-width: 200px;
    height: auto;
}

nav {
    background-color: #171717;
    padding: 20px;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
}

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

nav ul li {
    margin-bottom: 10px;
}

nav a {
    text-decoration: none;
    color: #fff;
    padding: 10px;
    display: block;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #00d9ff;
}

main {
    padding: 20px;
    margin-left: 240px; /* Ajuste para el ancho del navbar */
}

section {
    margin-bottom: 40px;
}

footer {
    background-color: #171717;
    color: #fff;
    text-align: center;
    padding: 20px;
}