matgargano/animate.html

## animate.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.7.0/animate.min.css">

</head>
<body>
    <h1 style="text-align:center;" class="animated heartBeat infinite slow">Hello World</h1>
</body>
</html>

## bootstrap.html
<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="css/bootstrap.css">
    <link rel="stylesheet" href="css/style.css">

    <title>Hello, world!</title>
  </head>
  <body>
    <h1>Hello, world!</h1>
    <button type="button" class="btn btn-primary">Primary</button>


    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49" crossorigin="anonymous"></script>
    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy" crossorigin="anonymous"></script>
  </body>
</html>

## index.html
<!doctype html>
<html lang="en">

<head>
  <!-- Required meta tags -->
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

  <!-- Bootstrap CSS -->
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.7.0/animate.min.css">
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
    crossorigin="anonymous">
  <link rel="stylesheet" href="css/style.css">

  <title>Hello, world!</title>
</head>

<body>
  <div class="no-gutters">
    <div class="jumbotron">
      <h1 class="text-center display-4 font-weight-bold animated heartBeat infinite">Hello, world!</h1>
      <p class="lead">This is a simple hero unit, a simple jumbotron-style component for calling extra attention to
        featured content or information.</p>
      <hr class="my-4">
      <p>It uses utility classes for typography and spacing to space content out within the larger container.</p>
      <a class="btn btn-primary btn-lg" href="#" role="button">Learn more</a>
    </div>
  </div>
  <div class="container">
    <div class="row">
      <div class="col-12 col-md-4">
        <div class="card">
          <img class="card-img-top" src="https://placehold.it/348x225" alt="Card image cap">
          <div class="card-body">
            <h5 class="card-title">Card title</h5>
            <p class="card-text">Some quick example text to build on the card title and make up the bulk of
              the card's content.</p>
            <a href="#" class="btn btn-primary">Go somewhere</a>
          </div>
        </div>
      </div>
      <div class="col-12 col-md-4">
        <div class="card">
          <img class="card-img-top" src="https://placehold.it/348x225" alt="Card image cap">
          <div class="card-body">
            <h5 class="card-title">Card title</h5>
            <p class="card-text">Some quick example text to build on the card title and make up the bulk of
              the card's content.</p>
            <a href="#" class="btn btn-primary">Go somewhere</a>
          </div>
        </div>
      </div>
      <div class="col-12 col-md-4">
        <div class="card">
          <img class="card-img-top" src="https://placehold.it/348x225" alt="Card image cap">
          <div class="card-body">
            <h5 class="card-title">Card title</h5>
            <p class="card-text">Some quick example text to build on the card title and make up the bulk of
              the card's content.</p>
            <a href="#" class="btn btn-primary">Go somewhere</a>
          </div>
        </div>
      </div>
    </div>
  </div>

  <!-- Optional JavaScript -->
  <!-- jQuery first, then Popper.js, then Bootstrap JS -->
  <script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
    crossorigin="anonymous"></script>
  <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js" integrity="sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
    crossorigin="anonymous"></script>
  <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js" integrity="sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
    crossorigin="anonymous"></script>
</body>

</html>

## style.css
.no-gutters {
    margin-right: 0;
    margin-left: 0;
  }

.no-gutters  > .col,
.no-gutters  > [class*="col-"] {
    padding-right: 0;
    padding-left: 0;
}

.no-gutters > .row {
    margin:0;
}
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<meta http-equiv="X-UA-Compatible" content="ie=edge">
	<title>Document</title>
	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.7.0/animate.min.css">

	</head>
	<body>
	<h1 style="text-align:center;" class="animated heartBeat infinite slow">Hello World</h1>
	</body>
	</html>
	.no-gutters {
	margin-right: 0;
	margin-left: 0;
	}

	.no-gutters > .col,
	.no-gutters > [class*="col-"] {
	padding-right: 0;
	padding-left: 0;
	}

	.no-gutters > .row {
	margin:0;
	}