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<!DOCTYPE html>
<html>
<title>W3.CSS</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="lib/w3.css">
<body>

<div class="w3-container">
  <h2>Closing Alerts</h2>
  <p>To close the alerts, click on the X in the upper right corner:</p>

<div class="w3-panel w3-red">
    <span onclick="this.parentElement.style.display='none'" class="w3-closebtn">×</span>
    <h3>Danger!</h3>
    <p>Red often indicates a dangerous or negative situation.</p>
  </div>

<div class="w3-panel w3-yellow">
    <span onclick="this.parentElement.style.display='none'" class="w3-closebtn w3-hover-text-red">×</span>
    <h3>Warning!</h3>
    <p>Yellow often indicates a warning that might need attention.</p>
  </div>

<div class="w3-panel w3-green">
    <span onclick="this.parentElement.style.display='none'" class="w3-closebtn">×</span>
    <h3>Success!</h3>
    <p>Green often indicates something successful or positive.</p>
  </div>

<div class="w3-panel w3-blue">
    <span onclick="this.parentElement.style.display='none'" class="w3-closebtn">×</span>
    <h3>Info!</h3>
    <p>Blue often indicates a neutral informative change or action.</p>
  </div>
</div>

</body>
</html>

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