.wa-float{position:fixed;right:26px;bottom:26px;z-index:60;width:58px;height:58px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;color:#25D366;text-decoration:none;
  background:transparent;border:1px solid rgba(37,211,102,.55);
  transition:transform .25s ease,background .25s ease,color .25s ease,box-shadow .25s ease}
.wa-float svg{width:34px;height:34px;display:block;filter:drop-shadow(0 2px 6px rgba(0,0,0,.25))}
.wa-float:hover{background:#25D366;color:#fff;border-color:#25D366;transform:translateY(-3px);box-shadow:0 12px 30px rgba(37,211,102,.45)}
.wa-float:hover svg{filter:none}
@media(max-width:640px){
  .wa-float{right:14px;bottom:16px;width:50px;height:50px}
  .wa-float svg{width:30px;height:30px}
}