```html .floating-whatsapp { position: fixed; bottom: 25px; right: 25px; width: 60px; height: 60px; background: #25D366; color: #fff !important; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 34px; text-decoration: none !important; z-index: 999999; box-shadow: 0 4px 12px rgba(37,211,102,.35); animation: wa-pulse 1.8s infinite; } .floating-whatsapp svg { width: 34px; height: 34px; fill: currentColor; } .floating-whatsapp::before, .floating-whatsapp::after { content: ""; position: absolute; inset: 0; border: 2px solid #25D366; border-radius: 50%; animation: wa-ripple 1.8s infinite; pointer-events: none; } .floating-whatsapp::after { animation-delay: .6s; } @keyframes wa-pulse { 0%, 100% { transform: scale(1); } 10%, 20% { transform: scale(1.08); } 15% { transform: scale(1); } } @keyframes wa-ripple { 0% { transform: scale(1); opacity: .7; } 100% { transform: scale(1.8); opacity: 0; } } @media (max-width: 767px) { .floating-whatsapp { width: 52px; height: 52px; bottom: 18px; right: 15px; } .floating-whatsapp svg { width: 30px; height: 30px; } } ```