.bd-placeholder-img 
{
  font-size: 1.125rem;
  text-anchor: middle;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
}

.hidden 
{ 
  display: none; 
}

@media (min-width: 768px) 
{
  .bd-placeholder-img-lg 
  {
    font-size: 3.5rem;
  }
}