.float {
     position: fixed;
     width: 60px;
     height: 60px;
     bottom: 40px;
     left: 40px;
     background-color: #25d366;
     color: #FFF;
     border-radius: 50px;
     text-align: center;
     font-size: 30px;
     box-shadow: 2px 2px 3px #999;
     z-index: 100;
   
   
   }
   
   .my-float {
     margin-top: 16px;
   }