是否可以在单击按钮时显示一个小的白色弹出窗口？

<button id="myButton">点击我</button>

#myModal {
  display: none; /* 初始状态下隐藏 */
  position: fixed;
  z-index: 9999;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 150px;
  background-color: white;
  border: 1px solid #ccc;
  border-radius: 5px;
  padding: 10px;
}

var button = document.getElementById("myButton");
var modal = document.getElementById("myModal");

button.addEventListener("click", function() {
  modal.style.display = "block"; // 显示弹出窗口
});

modal.addEventListener("click", function(event) {
  if (event.target === modal) {
    modal.style.display = "none"; // 点击弹出窗口外部时隐藏
  }
});