.whatsapp {
  position: fixed;
  top: 10%;
  left: 2%;
  z-index: 99999;
  -webkit-transition: 0.5s;
  -o-transition: 0.5s;
  transition: 0.5s;
}
.whatsapp span {
  background: #00d138;
  -webkit-box-shadow: 2px 2px 5px 0px rgba(0, 0, 0, 0.35);
  -moz-box-shadow: 2px 2px 5px 0px rgba(0, 0, 0, 0.35);
  box-shadow: 2px 2px 5px 0px rgba(0, 0, 0, 0.35);
  color: #fff;
  border-radius: 8px;
  padding: 5px;

  font-size: 16px;
}