.whatsapp-buy-btn{display:block;margin-top:15px;background:#25d366;color:#fff!important;padding:14px;text-align:center;border-radius:8px;font-size:16px;font-weight:600;transition:.3s ease}.whatsapp-buy-btn:hover{background:#1ebe5d}@media (max-width:768px){.whatsapp-buy-btn{position:fixed;bottom:10px;left:10px;right:10px;z-index:9999;margin:0;padding:16px;font-size:17px;border-radius:12px;text-align:center;box-shadow:0 6px 15px rgba(0,0,0,.25)}}