Pen Settings



CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource


Babel includes JSX processing.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource


Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.


Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.


// HTML 
// 22 feb 2017
// Only Bootstrap Modal (#myModal) is used in the javascript. 
Everything else is optional. See the JS. 

<h4>Bootstrap Modal with SessionStorage</h4>
<hr />
<p class="desc">
  Click this button to <strong>Refresh</strong> the page.
<a href="" id="refresh-page" class="btn btn-info btn-sm">
  Refresh Page

<p class="desc">
  Click this button to <strong>Reset</strong> and <strong>Refresh</strong> the page. 
<a href="" id="reset-session" class="btn btn-warning btn-sm">
  Reset Session

<!-- Bootstrap Modal -->
<div class="modal fade" id="myModal" role="dialog">
<div class="modal-dialog">
<!-- Modal content -->
<div class="modal-content">
<!-- Modal header -->  
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">&times;</button>
<h4 class="modal-title text-primary">Victor Frankenstein</h4>
<!-- Modal body -->  
<div class="modal-body">
  Victor is a modern scientist unleashed upon an unsuspecting society. Not fully aware of the consequences of his creating a new race of humans, he spends his entire life trying to destroy the same creation. Victor is also the unbridled ego who must satisfy his urge to know all and use that learning to create a new race of man. His excesses ultimately destroy him. Victor represents the id, the part of the psyche that is governed by the instinctive impulses of sex or aggression.
<!-- Modal footer -->  
<div class="modal-footer">
<button type="button" class="btn btn-default btn-sm" data-dismiss="modal"> Close </button>
</div> <!-- // .modal-content -->
</div> <!-- // .modal-dialog -->
</div> <!-- // #myModal -->


                // CSS is only for the visual design of this page. This got nothing to do with the storages. See the JS.
// 22 feb 2017

$text: #FFD5C2;
body {
  background-color: #335C64; 
  h4 {
    color: $text;
  .desc {
    color: $text;
    margin-bottom: 4px;
  .btn-sm {
    margin-bottom: 15px;



                // Original code by Simon. You can check the original code here
// Altered and Edited for Bootstrap Modal
// 22 feb 2017

// init

  // Start
  // sessionStorage.getItem('key');
  if (sessionStorage.getItem("story") !== 'true') {
    // sessionStorage.setItem('key', 'value'); pair
    sessionStorage.setItem("story", "true");
    // Calling the bootstrap modal
  // End
  // Do not include the code below, it is just for the 'Reset Session' button in the viewport.
  // This is same as closing the browser tab.