.fundo-proporcional {
    width: 100%;
    max-width: 1080px;
    aspect-ratio: 1080 / 1668;
    background-image: url('https://sitebuilder-887478732.zohositescontent.com/Banner%20Mobile%202-1.png');
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    margin: 0 auto;
}