123

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

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

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

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

Code Indentation

     

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.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <button id='show' onClick='showDialog()'>Show Dialog</button>
<div id='text'>
  <p>It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of despair, we had everything before us, we had nothing before us, we were all going direct to Heaven, we were all going direct the other way-- in short, the period was so far like the present period, that some of its noisiest authorities insisted on its being received, for good or for evil, in the superlative degree of comparison only.</p>

<p>There were a king with a large jaw and a queen with a plain face, on the throne of England; there were a king with a large jaw and a queen with a fair face, on the throne of France. In both countries it was clearer than crystal to the lords of the State preserves of loaves and fishes, that things in general were settled for ever.</p>

<p>It was the year of Our Lord one thousand seven hundred and seventy-five. Spiritual revelations were conceded to England at that favoured period, as at this. Mrs. Southcott had recently attained her five-and-twentieth blessed birthday, of whom a prophetic private in the Life Guards had heralded the sublime appearance by announcing that arrangements were made for the swallowing up of London and Westminster. Even the Cock-lane ghost had been laid only a round dozen of years, after rapping out its messages, as the spirits of this very year last past (supernaturally deficient in originality) rapped out theirs. Mere messages in the earthly order of events had lately come to the English Crown and People, from a congress of British subjects in America: which, strange to relate, have proved more important to the human race than any communications yet received through any of the chickens of the Cock-lane brood.</p>
</div>
<div id='dialog'>
  <span>Oh wow, modal! We can close this now.</span>
  <button id='close' onClick='closeDialog()'>Close Dialog</button>
</div>

            
          
!
            
              body {
  display: flex;
  font-size: 1.5em;
  justify-content: center;
  line-height: 1.5;
  margin: 0;
  padding: 0;
}
#text {
  max-width: 800px;
}
#dialog {
  display: none;
  position: fixed;
  top: 10vh;
  left: 10vw;
  width: 80vw;
  height: 80vw;
  border: 1px solid #eee;
  border-radius: 4px;
  padding: 10px;
  text-align: center;
  z-index: 1;
  background-color: #444;
  color: #fff;
}
#dialog.show {
  align-items: center;
  display: flex;
  flex-direction: column;
}
#dialog span {
  margin-bottom: 1em;
}
#show,
#close {
  background: #da1b60;
  border: none;
  color: #fff;
  display: block;
  font-size: 1em;
  padding: 1em;
  width: 200px;
}
#show:hover,
#close:hover {
  background: #ff8a00;
  cursor: pointer;
}
#show {
  position: fixed;
  top: 30px;
  left: 10px;
}
#close {
  position: relative;
}
            
          
!
            
              const showDialog = () => {
  document.getElementById('dialog').classList.add('show')
  const body = document.body;
  const scrollY = body.style.top;
  body.style.position = 'fixed';
};
const closeDialog = () => {
  const body = document.body;
  const scrollY = body.style.top;
  body.style.position = '';
  body.style.top = '';
  window.scrollTo(0, parseInt(scrollY || '0') * -1);
  document.getElementById('dialog').classList.remove('show');
}
window.addEventListener('scroll', () => {
  document.documentElement.style.setProperty('--scroll-y', `${window.scrollY}px`);
});
            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.

Console