body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.whatsapp-button {
  position: fixed;
  bottom: 20px;
  left: 20px;
  z-index: 1000;
}

.whatsapp-button a {
  position: relative;
  display: inline-block;
}

.whatsapp-button a img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s, box-shadow 0.3s;
}

.whatsapp-button a img:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.whatsapp-tooltip {
  visibility: hidden;
  background-color: #25d366;
  color: white;
  text-align: center;
  border-radius: 6px;
  padding: 5px 10px;
  position: absolute;
  bottom: 60px;
  left: 0;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.3s;
  white-space: nowrap;
}

.whatsapp-button a:hover .whatsapp-tooltip {
  visibility: visible;
  opacity: 1;
}

@media (max-width: 600px) {
  .whatsapp-button a img {
    width: 50px;
    height: 50px;
  }
}