#whatsapp-chat-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25D366;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  border: none;
  font-size: 0;
  z-index: 1000;
  cursor: pointer;
  background-image: url('https://upload.wikimedia.org/wikipedia/commons/6/6b/WhatsApp.svg');
  background-size: 60%;
  background-repeat: no-repeat;
  background-position: center;
}
#chat-box {
  position: fixed;
  bottom: 90px;
  right: 20px;
  background: white;
  border: 1px solid #ccc;
  border-radius: 15px;
  width: 300px;
  padding: 15px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 1000;
  font-family: Arial, sans-serif;
}
#chat-box select, #chat-box button {
  width: 100%;
  padding: 10px;
  margin-top: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
}