.service-icon {
      font-size: 48px;
      color: #0d6efd;
    }
    .btn-wsp {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: #25d366;
      color: white;
      border-radius: 50%;
      padding: 15px;
      font-size: 24px;
      z-index: 100;
    }