.overlay_wonder {
  position: absolute;
  bottom: 10px;
  left: 10px;

  background-color: rgba(0, 0, 0, 0.25);
  /* Black see-through */
  width: auto;
  height: 30px;
  transition: .5s ease;
  opacity: 1;
  color: #F7F7F7;
  font-size: 12px;
  padding: 7px;
  text-align: center;
}

/* When you mouse over the container, fade in the overlay title */

.img_captation:hover .overlay_wonder {
  opacity: 0;
}

.img_captation:hover .image {
  opacity: 0.3;
}

@media (max-width: 576px) {
  .overlay_wonder {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background-color: rgba(0, 0, 0, 0.25);
    width: 120px;
    height: 20px;
    transition: .5s ease;
    opacity: 1;
    color: rgba(247, 247, 247, 0.90);
    font-size: 8px;
    padding: 5px;
    text-align: center;
  }
}