.float{
   position:fixed;
   width:60px;
   height:60px;
   bottom:40px;
   right: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;
}