#error-message {
  position: absolute;
  bottom: 100%;
  left: 0;
  width: 100%;
  color: red;
  text-align: center;
  padding: 5px 0;
  opacity: 0;
  transform: translateY(70%);
}

#error-message.display-email-input {
  opacity: 1;
  transform: translateY(8px);
}