#particles-js{
  width: 100%;
  height: 100%; 
  background-image: url('');
  background-size: cover;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  position: absolute;
  z-index: 10;
}
#particles-login{
  width: 100%;
  height: 100%; 
  background-image: url('');
  background-size: cover;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  position: absolute; 
}