body {
    background-color: black;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.banner {
    display: none;
    width: 100%;
    height: auto;
    object-fit: contain; 
}

@media (min-width: 481px) {
    .banner.large {
        display: block;
    }
}

@media (max-width: 480px) {
    .banner.mobile {
        display: block;
    }
}