body {
     background-image: url("https://metaficticio.com/img/display/bkg.jpg");
     background-color: #000;
     background-position: center top;
     background-size: cover contain;
}

.first {
     margin: 0 auto;
     width: 80%;
     max-width: 900px;
     display: flex;
  justify-content: center;
  align-items: center;
  min-height: 95vh;
}
     .first img {width: 100%; height: auto;}

@media screen and (max-width:480px){


}