.bgImgCenterv{
    background-image: url('../images/productos/fondo-ventanas.jpg');
    background-repeat: no-repeat;
    background-position: center; 
    position: relative;
}
.bgImgCenterp{
    background-image: url('../images/productos/fondo-puertas.jpg');
    background-repeat: no-repeat;
    background-position: center; 
    position: relative;
}

/*
html {
  font-size: 12px;
}

*/

@media screen and (min-width: 768px) {
  html {
    font-size: 13px;
  }
}

@media screen and (min-width: 375px) {
  html {
    font-size: 14px;
  }
}