如何让菜单从底部的按钮向上滑动，而不是直接出现？HTML/CSS/JS

<button id="menuButton">菜单按钮</button>
<div id="menu" class="hidden">
  <!-- 菜单内容 -->
</div>

#menuButton {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

#menu {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0;
  background-color: #f1f1f1;
  transition: height 0.3s ease;
}

.hidden {
  display: none;
}

const menuButton = document.getElementById('menuButton');
const menu = document.getElementById('menu');

menuButton.addEventListener('click', toggleMenu);

function toggleMenu() {
  menu.classList.toggle('hidden');
  if (menu.classList.contains('hidden')) {
    menu.style.height = '0';
  } else {
    menu.style.height = `${menu.scrollHeight}px`;
  }
}