.banner {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), 
                      url('https://via.placeholder.com/1200x400?text=July+4th+Banner');
    background-size: cover;
    background-position: center;
    height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}

.banner h1 {
    font-size: 3rem;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.7);
}

.banner p {
    font-size: 1.5rem;
}