@media screen and (min-width: 780px) {
  #fondoAzul2 {
    background-image: url("../images/letraAzul.png");
    background-repeat: no-repeat;
    background-size: contain;
    background-position-x: right;
    
    
  }
  
  #fondoAzul {
    background-image: url("../images/rayoverde.png");
    background-repeat: no-repeat;
    background-size: 93%;
    background-position-y: 56%;
    background-position-x: -850%;
    height: 900px;  
  }

  #imgAzul {
    height: 650px;
  }
}

@media screen and (max-width: 780px) {
    
     #imgAzul {
    height: 400px;
    display: block;
    margin: auto;
  }
}