如何创建一个流畅的浮动按钮？

<button id="floating-btn">点击我</button>

#floating-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  font-size: 20px;
  text-align: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease-in-out;
}

#floating-btn:hover {
  transform: scale(1.1);
}

#floating-btn:active {
  transform: scale(0.9);
}

document.getElementById("floating-btn").addEventListener("click", function() {
  // 点击按钮后的操作
  console.log("按钮被点击了！");
});