body {
    background-color: rgb(68, 235, 235);
    color: bisque;
    font-family: "Bai Jamjuree", sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 700px;
    margin: 0;
}

button {
    background-color: antiquewhite;
    color: aqua;
    font-family:"Bai Jamjuree", sans-serif;
}

.passo  {
    display: none;
}
 
.passo.ativo {
     display:block;
}

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

img {
   max-width: 90%;
}