<!DOCTYPE html>
<html lang="en">
<head>

  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <title>jQuery UI Button - Default functionality</title>

  <link rel="stylesheet" 
  href="//code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css">
  
  <link rel="stylesheet" href="/resources/demos/style.css">

  <script src="https://code.jquery.com/jquery-1.12.4.js"></script>
  <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>

  <script>
    $(function () {
        $(".widget input[type=submit], .widget a, .widget button").button();
        $("button, input, a").click(function (event) {
            event.preventDefault();
        });
    });
  </script>

</head>

    <body>
        <div class="widget">
          <h1>Widget Buttons</h1>
          <button>A button element</button>
          <input type="submit" value="A submit button">
          <a href="#">An anchor<a>
        </div>

        <h1>CSS Buttons<h1>

		<button class="ui-button ui-widget ui-corner-all">
			A button element
		</button>
        
		<input 
			class="ui-button ui-widget ui-corner-all" 
			type="submit" 
			value="A submit button">

		<a class="ui-button ui-widget ui-corner-all" 
			href="#">An anchor</a>

    </body>

</html>