body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #1a1a1a;
    color: #ffffff;
}

header {
    background-color: #333333;
    padding: 1rem;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.navbar .logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #ffffff;
}

.navbar .nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    padding: 0;
    margin: 0;
}

.navbar .nav-links li a {
    text-decoration: none;
    color: #ffffff;
    font-size: 1rem;
}

.navbar .nav-links li a.active {
    border-bottom: 2px solid #ff9800;
    color: #ff9800;
}

.banners-info {
    text-align: center;
    padding: 2rem 1rem;
}

.banners-info h1 {
    font-size: 2rem;
    color: #ff9800;
    margin-bottom: 1.5rem;
}

.banner-card {
    background-color: #333333;
    border-radius: 10px;
    padding: 1.5rem;
    margin: 1.5rem auto;
    max-width: 600px;
    text-align: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.banner-card img {
    max-width: 100%;
    border-radius: 10px;
    margin-bottom: 1rem;
}

.banner-details {
    margin-top: 1rem;
}

.banner-details select {
    margin: 0.5rem 0;
    padding: 0.5rem;
    font-size: 1rem;
    border: 1px solid #555555;
    background-color: #2a2a2a;
    color: #ffffff;
    border-radius: 5px;
}

.banner-details p {
    font-size: 1.2rem;
    margin: 1rem 0;
}

.banner-details button {
    background-color: #ff9800;
    color: #ffffff;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
}

.banner-details button:hover {
    background-color: #e68900;
}

/* Responsive */
@media screen and (max-width: 768px) {
    .banner-card {
        padding: 1rem;
    }

    .banner-details p {
        font-size: 1rem;
    }
}