body{margin:0;padding:0;font-family:Arial,sans-serif;background-color:#f8f9fa}.whatsapp-float{position:fixed;bottom:20px;right:20px;z-index:999;background-color:transparent;border-radius:50%;cursor:pointer;box-shadow:0 4px 10px rgba(0,0,0,.3);transition:transform .2s ease}.whatsapp-float:hover{transform:scale(1.1)}@media (max-width:768px){.whatsapp-float{width:50px!important;bottom:15px;right:15px}}