body{
    background-color: green;
    color: white;
    font-family: "Bai Jamjuree", sans-serif;
    display: flex; 
    justify-content: center;
    align-items: center;
    height: 700px;
    margin: 0;
}
button{
    background-color: blue;
    color: white;
    font-family: "Bai Jamjuree", sans-serif;
}
.passo {
    display: none;{
}

.passo.ativo{
    display:block;
}

main{
    text-align: center;
    max-width: 90%;
}

img {
    max-width: 90%;
}