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">
<body>
<div class="w3-container">

<h2>彩色导航栏</h2>
<p>使用 w3-color 类为导航栏添加背景颜色：</p>

<div class="w3-bar w3-light-grey">
  <a href="#" class="w3-bar-item w3-button">首页</a>
  <a href="#" class="w3-bar-item w3-button">链接 1</a>
  <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>
<br>
<div class="w3-bar w3-green">
  <a href="#" class="w3-bar-item w3-button">首页</a>
  <a href="#" class="w3-bar-item w3-button">链接 1</a>
  <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>
<br>
<div class="w3-bar w3-blue">
  <a href="#" class="w3-bar-item w3-button">首页</a>
  <a href="#" class="w3-bar-item w3-button">链接 1</a>
  <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>
<br>
<div class="w3-bar w3-red">
  <a href="#" class="w3-bar-item w3-button">首页</a>
  <a href="#" class="w3-bar-item w3-button">链接 1</a>
  <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>
<br>
<div class="w3-bar w3-blue-grey">
  <a href="#" class="w3-bar-item w3-button">首页</a>
  <a href="#" class="w3-bar-item w3-button">链接 1</a>
  <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>
</body>
</html>