.call-button{position:fixed;bottom:20px;right:20px;background-color:#28a745;color:#fff;border-radius:50px;padding:14px 20px;font-size:16px;text-decoration:none;box-shadow:0 4px 6px rgba(0,0,0,.2);z-index:9999;transition:background-color .3s ease}.call-button:hover{background-color:#218838}@media(max-width: 768px){.call-button{padding:12px 16px;font-size:14px}}