#installBtn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #yourColor;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 30px;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
  z-index: 9999;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    transform: translateY(100px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}