w3css 在线编辑器 | w3css代码测试

<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.cainiaomax.com/w3css/4/w3.css">
<link rel="stylesheet" href="https://cdn.cainiaomax.com/cdnjs/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<body>

<div class="w3-sidebar w3-bar-block w3-light-grey w3-card" style="width:160px;">
  <a href="#" class="w3-bar-item w3-button">链接 1</a>
  <button class="w3-button w3-block w3-left-align" onclick="myAccFunc()">
  手风琴 <i class="fa fa-caret-down"></i>
  </button>
  <div id="demoAcc" class="w3-hide w3-white w3-card">
    <a href="#" class="w3-bar-item w3-button">链接</a>
    <a href="#" class="w3-bar-item w3-button">链接</a>
  </div>

<div class="w3-dropdown-click">
    <button class="w3-button" onclick="myDropFunc()">
      下拉列表 <i class="fa fa-caret-down"></i>
    </button>
    <div id="demoDrop" class="w3-dropdown-content w3-bar-block w3-white w3-card">
      <a href="#" class="w3-bar-item w3-button">链接</a>
      <a href="#" class="w3-bar-item w3-button">链接</a>
    </div>
  </div>
  <a href="#" class="w3-bar-item w3-button">链接 2</a>
  <a href="#" class="w3-bar-item w3-button">链接 3</a>
</div>

<div class="w3-container" style="margin-left:160px">
<h2>侧边栏手风琴</h2>
<p>在此示例中，我们在侧边导航中添加了手风琴和下拉菜单。</p>
<p>单击两者以了解它们之间的区别。 手风琴将向下推内容，而下拉菜单则覆盖内容。</p>
</div>

<script>
function myAccFunc() {
  var x = document.getElementById("demoAcc");
  if (x.className.indexOf("w3-show") == -1) {
    x.className += " w3-show";
    x.previousElementSibling.className += " w3-green";
  } else { 
    x.className = x.className.replace(" w3-show", "");
    x.previousElementSibling.className = 
    x.previousElementSibling.className.replace(" w3-green", "");
  }
}

function myDropFunc() {
  var x = document.getElementById("demoDrop");
  if (x.className.indexOf("w3-show") == -1) {
    x.className += " w3-show";
    x.previousElementSibling.className += " w3-green";
  } else { 
    x.className = x.className.replace(" w3-show", "");
    x.previousElementSibling.className = 
    x.previousElementSibling.className.replace(" w3-green", "");
  }
}
</script>

</body>
</html>