.bg-blur {    
  /* Add the blur effect */
  filter: blur(8px);
  -webkit-filter: blur(5px);
  
  /* Full height */
  height: 100%; 
  
  /* Center and scale the image nicely */
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.bg-validacion {
  background-image: url('../images/bg-auth.png'); 
  background-size: contain; 
  background-repeat: no-repeat;
}