如何创建可折叠的搜索框，以便在单击时覆盖导航栏项目

<nav>
  <div class="navbar">
    <div class="logo">Logo</div>
    <div class="search-icon">
      <i class="fa fa-search"></i>
    </div>
    <div class="menu">
      <ul>
        <li>项目1</li>
        <li>项目2</li>
        <li>项目3</li>
      </ul>
    </div>
  </div>
  <div class="search-box">
    <input type="text" placeholder="搜索...">
    <button class="close-icon">
      <i class="fa fa-times"></i>
    </button>
  </div>
</nav>

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  background-color: #f2f2f2;
}

.logo {
  font-size: 20px;
  font-weight: bold;
}

.search-icon, .close-icon {
  cursor: pointer;
}

.menu {
  display: none;
}

.menu ul {
  list-style-type: none;
  padding: 0;
  margin: 0;
}

.menu ul li {
  display: inline-block;
  margin-right: 10px;
}

.search-box {
  display: none;
  padding: 10px;
  background-color: #f2f2f2;
}

.search-box input {
  width: 200px;
  padding: 5px;
  border: none;
  border-radius: 5px;
}

.search-box .close-icon {
  border: none;
  background-color: transparent;
  cursor: pointer;
}

const searchIcon = document.querySelector('.search-icon');
const closeIcon = document.querySelector('.close-icon');
const menu = document.querySelector('.menu');
const searchBox = document.querySelector('.search-box');

searchIcon.addEventListener('click', function() {
  menu.style.display = 'none';
  searchBox.style.display = 'block';
});

closeIcon.addEventListener('click', function() {
  menu.style.display = 'block';
  searchBox.style.display = 'none';
});