Untitled

<head>
  <script type="text/javascript" src='imgCheckbox/jquery.imgcheckbox.js'>

<body>
<!-- Main -->
<main role="main" class="container-fluid">

  <div class="container-fluid" style="margin-top:50px;">
    <section id="basicusage" class="wrapper special">
      <header class="major">
        <h2>Basic Usage</h2>
      </header>
      <form class="exampleone">
        <p>
          <img src="images/1.jpg" class="img-fluid" alt="">
          <span class="spacer"></span>
          <img src="images/2.jpg" class="img-fluid" alt="">
          <span class="spacer"></span>
          <img src="images/3.jpg" class="img-fluid" alt="">
        </p>
        <input type="submit" />
      </form>
    </section>
  </div>

</main>
</body>