<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css"
          rel="stylesheet"/>
    <link href="css/style.css" rel="stylesheet" type="text/css">
  </head>
  <body>
    <div id="app"></div>
    <script src="js/compiled/skytwit.js" type="text/javascript"></script>
  </body>
</html>

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css"
          rel="stylesheet"/>
    <link href="css/style.css" rel="stylesheet" type="text/css">
  </head>
  <body>
    <div id="app" class="container"></div>
    <script src="js/compiled/skytwit.js" type="text/javascript"></script>
  </body>
</html>

Use a bootstrap container to center content
Use a bootstrap container to center content