.banner {
    background-image: url("christmasbanner.jpg");
    background-size: cover;
    background-position: center;
    height: 250px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.banner h1 {
    color: white;
    font-size: 3em;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 10px 20px;
}