.wa-float{position:fixed;left:20px;bottom:20px;width:56px;height:56px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(0,0,0,.3);z-index:1000;transition:transform .2s}
.wa-float:hover{transform:scale(1.1)}