html{
  height: 100%;
}
body{
  height: 100%;
}
 section{
    width: 100%;
    height: auto;    
    text-align: center;
    justify-content: center;
    align-items: center;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
 }
   
 
 section:nth-of-type(2){
    background-color: rgb(224, 224, 224);
    color: #000;
 }
 section:nth-of-type(3){
   padding-top: 5rem;
   display: block;
   background-image: url('../imagens/g.jpg');
 }
 @media only screen and (max-width:768px){
  

 }