.whatsapp-icon {
      position: fixed;
      bottom: 70px;
      right: 1em;
      z-index: 1000;
      background-color: #25D366;
      padding: 10px;
      border-radius: 50%;
      box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s ease-in-out;
      animation: pulse 2.5s infinite;
    }
    .whatsapp-icon img {
      width: 40px;
      height: 40px;
      display: block;
    }
    .whatsapp-icon:hover {
      transform: scale(1.1);
    }
    @keyframes pulse {
      0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6); }
      70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
      100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
    }
    @media (max-width: 768px) {
      .whatsapp-icon {
        bottom: 70px;
        right: 5px;
      }
    }