#wapp {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 65px;
  height: 65px;
  z-index: 9999;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

#wapp a {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  /* make sure the whole area is clickable */
}

#wapp img {
  width: 100%;
  height: 100%;
  object-fit: cover;         /* ← helps if image has weird proportions */
  border-radius: 50%;
}