js/tests/visual/alert.html

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="../../../dist/css/bootstrap.min.css" rel="stylesheet">
    <title>Alert</title>
  </head>
  <body>
    <div class="container">
      <h1>Alert <small>Bootstrap Visual Test</small></h1>

      <div class="alert alert-warning alert-dismissible fade show" role="alert">
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
        <strong>Holy guacamole!</strong> You should check in on some of those fields below.
      </div>

      <div class="alert alert-danger alert-dismissible fade show" role="alert">
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
        <p>
          <strong>Oh snap!</strong> <a href="#" class="alert-link">Change a few things up</a> and try submitting again.
        </p>
        <p>
          <button type="button" class="btn btn-danger">Danger</button>
          <button type="button" class="btn btn-secondary">Secondary</button>
        </p>
      </div>

      <div class="alert alert-danger alert-dismissible fade show" role="alert">
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
        <p>
          <strong>Oh snap!</strong> <a href="#" class="alert-link">Change a few things up</a> and try submitting again. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Cras mattis consectetur purus sit amet fermentum.
        </p>
        <p>
          <button type="button" class="btn btn-danger">Take this action</button>
          <button type="button" class="btn btn-primary">Or do this</button>
        </p>
      </div>

      <div class="alert alert-warning alert-dismissible fade show" role="alert" style="transition-duration: 5s;">
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
        This alert will take 5 seconds to fade out.
      </div>
    </div>

    <script src="../../../dist/js/bootstrap.bundle.js"></script>
  </body>
</html>