Webmastertoolbag Tryit Editor

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  .
  </div>
  <div class="alert alert-info">
    <strong>Info!</strong> You should <a href="#" class="alert-link">read this message</a>.
  </div>
  <div class="alert alert-warning">
    <strong>Warning!</strong> You should <a href="#" class="alert-link">read this message</a>.
  </div>
  <div class="alert alert-danger">
    <strong>Danger!</strong> You should <a href="#" class="alert-link">read this message</a>.
  </div>
  <div class="alert alert-primary">
    <strong>Primary!</strong> You should <a href="#" class="alert-link">read this message</a>.
  </div>
  <div class="alert alert-secondary">
    <strong>Secondary!</strong> You should <a href="#" class="alert-link">read this message</a>.
  </div>
  <div class="alert alert-dark">
    <strong>Dark!</strong> You should <a href="#" class="alert-link">read this message</a>.
  </div>
  <div class="alert alert-light">
    <strong>Light!</strong> You should <a href="#" class="alert-link">read this message</a>.
  </div>
</div>