.float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 20px;
  left: 20px; /* alineado a la izquierda */
  background-color: #25d366;
  color: #fff;
  border-radius: 50%;
  text-align: center;
  font-size: 30px;
  line-height: 60px;
  box-shadow: 2px 2px 3px #999;
  z-index: 999;
  transition: transform 0.3s ease;
}

.float:hover {
  transform: scale(1.1);
}

.my-float {
  vertical-align: middle;
}