img {
   position: absolute;
   top: 45%;
   left: 25%;
   width: 900px;
   height: auto;
   margin-top: -450px; /* Half the height */
   margin-left: -450px; /* Half the width */
}

div.produto {
  position: absolute;
  top: 0px;
  right: 0px;
  width: 930px;
  height: 300px;
  border: 0px solid #73AD21;
}
div.preco {
  position: absolute;
  top: 350px;
  right: 195px;
  width: 492px;
  height: 250px;
  border: 0px solid #73AD21;
}  
  
}
.oferta {
   position: absolute;
   top: 45%;
   left: 25%;
   width: auto;
   height: 100px;
   margin-top: -50px; /* Half the height */
   margin-left: -50px; /* Half the width */
}