.whatsapp-float-btn{position:fixed;bottom:30px;right:20px;z-index:9999;width:60px;height:60px;background:#25D366;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 8px rgba(0,0,0,0.3)}.whatsapp-float-btn img{width:60%;height:60%}@media (max-width:768px){.whatsapp-float-btn{width:50px;height:50px}}