<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://www.w3schools.cn/w3css/4/w3.css">
<body>
<div class="w3-container">
<h2>圆形进度条</h2>
<p>使用 <strong>w3-round</strong> 类为进度条添加圆角：</p>
<div class="w3-light-grey w3-round">
<div class="w3-container w3-blue w3-round" style="width:25%">25%</div>
</div><br>
<div class="w3-light-grey w3-round-large">
<div class="w3-container w3-blue w3-round-large" style="width:25%">25%</div>
</div><br>
<div class="w3-light-grey w3-round-xlarge">
<div class="w3-container w3-blue w3-round-xlarge" style="width:25%">25%</div>
</div>
</div>
</body>
</html>