.whatsapp{
     position: fixed;
     width: 70px;
     height: 70px;
     bottom: 20px;
     right: 20px;
     background-color: #25d366;
     color: #fff;
     border-radius: 50px;
     text-align: center;
     font-size: 40px;
     box-shadow: 1px 1px 2px #888;
     z-index: 60;
}
.whatsapp .fa-whatsapp{
 margin-top: 16px;
}
@media screen and (max-width: 1000px) {
     .whatsapp{
          position: fixed;
          width: 70px;
          height: 70px;
          bottom: 75px;
          right: 15px;
          width: 45px;
          height: 45px;
          font-size: 23px;
     }
     .whatsapp .fa-whatsapp{
          margin-top: 11.5px;
     }
}