.float-whatsapp { animation: pulse 2s infinite; border-radius:50px; }
@keyframes pulse {
0% {
  -moz-box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4);
  box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4);
}
70% {
  -moz-box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
  box-shadow: 0 0 0 40px rgba(37, 211, 102, 0);
}
100% {
  -moz-box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
}
}