.wa-left{position:fixed;bottom:20px;left:20px;background:#25D366;color:white;width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:32px;text-decoration:none;z-index:9999;box-shadow:0 4px 12px rgba(0,0,0,0.25)}