C
运行 »
×
下载代码
⇫
加载文件
改变主题,夜晚/白天
<!DOCTYPE html> <html> <title>W3.CSS</title> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://www.rocschool.com/public/static/w3css/4/w3.css";> <body class="w3-container w3-auto"> <h2>Display Warnings</h2> <p>The w3-panel class can be used to display warnings:</p> <div class="w3-panel w3-pale-yellow w3-border"> <h3>Warning!</h3> <p>Yellow often indicates a warning that might need attention.</p> </div> <div class="w3-panel w3-yellow w3-border"> <h3>Warning!</h3> <p>Yellow often indicates a warning that might need attention.</p> </div> </body> </html>