body {
    margin: 0;
    background: #1c1c1c;
    color: #fff;
    font-family: Arial, sans-serif;
}
h1, h2 {
    color: #ffcc00;
}
h1 {
    font-size: 36px;
}
p {
    line-height: 1.5;
    color: #ccc;
    margin-bottom: 15px;
    font-size: 25px;
}
/* Navegación */
.navbar {
    background: #1c1c1c;
    border-bottom: 2px solid #ffcc00;
}
.navbar ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.navbar li {
    display: inline-block;
}
.navbar a {
    display: block;
    padding: 20px 30px;
    color: #fff;
    text-decoration: none;
    font-size: 18px;
}
.navbar a:hover,
.navbar a.active {
    background: #555555;
    color: #ffe81f;
}
.navbar a.active {
    font-weight: bold;
    border-bottom: 3px solid #ffcc00;
}
/* Contenido */
main {
    padding: 40px;
    text-align: center;
}
.banner {
    width: 80%;
    margin-bottom: 30px;
    border: 2px solid #333;
}
/* Artículos */
article {
    display: flex;
    align-items: center;
    margin-top: 40px;
    text-align: left;
}
article div {
    width: 50%;
    padding: 20px;
}
article img {
    width: 90%;
}
/* Footer */
.footer {
    background: #555555;
    color: #aaa;
    padding: 20px;
    text-align: center;
    border-top: 1px solid #333;
}