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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 class="w3-container">

<h2>Closing Alerts</h2>

<p>To close these containers, click on the X in the upper corner:</p>

<div class="w3-container w3-section w3-red">
<span onclick="this.parentElement.style.display='none'" class="w3-closebtn">&times;</span>
  <h3>Danger!</h3>
  <p>Red often indicates a dangerous or potentially negative action.</p>
</div>

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

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

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

</body>
</html>