.whatsapp {
    position:fixed;
    width:60px;
    height:60px;
    bottom:20px;
    right:40px;

    background-color: green;
    color:#FFF;
    border-radius:50px;
    text-align:center;
    font-size:30px;
    z-index:10000;
}
  
.whatsapp-icon {
    margin-top:14px;
}

.whatsapp-icon:hover{
    color:#fff;
}