仅CSS选项卡试用嵌套输入标记的内容

<div class="tab-container">
  <ul class="tab-nav">
    <li><a href="#tab1">Tab 1</a></li>
    <li><a href="#tab2">Tab 2</a></li>
    <li><a href="#tab3">Tab 3</a></li>
  </ul>
  <div id="tab1" class="tab-content">
    Content of Tab 1
  </div>
  <div id="tab2" class="tab-content">
    Content of Tab 2
  </div>
  <div id="tab3" class="tab-content">
    Content of Tab 3
  </div>
</div>

.tab-container {
  width: 100%;
}

.tab-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tab-nav li {
  display: inline-block;
}

.tab-nav li a {
  display: block;
  padding: 10px 20px;
  background-color: #ccc;
  color: #000;
  text-decoration: none;
}

.tab-nav li a:hover {
  background-color: #aaa;
}

.tab-content {
  display: none;
  padding: 20px;
}

.tab-content:first-child {
  display: block;
}

document.addEventListener("DOMContentLoaded", function() {
  var tabs = document.querySelectorAll(".tab-nav li a");
  var contents = document.querySelectorAll(".tab-content");

  tabs.forEach(function(tab) {
    tab.addEventListener("click", function(e) {
      e.preventDefault();

      var target = document.querySelector(this.getAttribute("href"));
      contents.forEach(function(content) {
        content.style.display = "none";
      });
      target.style.display = "block";
    });
  });
});