.whatsapp {
  position:fixed;
  width:60px;
  height:60px;
  bottom:50px;
  right:40px;
  background-color:#25d366;
  color:#FFF;
  border-radius:50px;
  text-align:center;
  font-size:30px;
  z-index:100;
}

.whatsapp-icon {
  margin-top:13px;
}


@media only screen and (min-width:1px) and (max-width:350px){
.whatsapp{
width:40px;
height:40px;
bottom:49px;
right:7px;
font-size:26px;
}
.whatsapp-icon {
margin-top:5px;
}
}