.idea {
  position: relative;
  display: inline-block;
}

.idea img.idea-image {
  width: 100%;
  height: auto;
}

.tooltip {
  display: none;
  position: absolute;
  background-color: white;
  border: 1px solid black;
  padding: 5px;
  z-index: 10;
  /* Additional styling */
}

/* Tooltip visibility on hover for desktops is handled by JavaScript */