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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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About the <head>

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

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Packages

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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.

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Using packages here is powered by Skypack, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ES6 import usage.

All packages are different, so refer to their docs for how they work.

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HTML 

              
                <script src='https://widget.tibit.com/assets/js/tib-2.2-load.js'></script>

<h2>tib</h2>
<h4>Support Syncthing with a quick micro-donation.</h4>

<button class='bd-tib-btn withshadow' 
  data-bd-TIB='syncthing.net'
  data-bd-BTN='bar' 
  data-bd-SUB='tibit-codepen-syncthing'>
</button>

<p class='notes'>
  Please note: Chrome <a href=https://goo.gl/dzSlws>issue 597641</a> prevents navigation of sandboxed popup windows in CodePen.<br> This does not impact 'real world' tibbing, but for this demo we recommend using a different broswer.
</p>

<p class='notes'>
  Registration is required to send tibs, but it only takes a second.<br>
  New signups get two free tibs to see how <a href='https://tibit.com'>tibit</a> works.
</p>
!

CSS 

              
                .bd-btn-text .bd-btn-pretib::after { 
  content: 'tib Syncthing'; }

.bd-btn-text .bd-btn-posttib::after {
  content: 'Thanks!'; }

.bd-tib-btn[data-bd-BTN='bar'] {
  background-color: #5CB85C; }

.bd-tib-btn[data-bd-BTN='bar'].tibbed {
  background-color: #337AB7; } 

/* AUXILLIARY FOR CODEPEN DEMO */

body {
  font-family: 'Roboto', Arial, sans-serif;
  color: #333;   background-color: #EEE;
  text-align: center; }
.notes {
  margin-top: 50px; 
  font-size: 70%; font-style: italic; }
!

JS 

              
                tibInit({
  'PAD': 'mytibs9YhLYtrVhQkmTdbDS51H54WyrxTx'
   // change to Syncthing static bitcoin address from Coinbase
});

// With a testnet bitcoin address, demo mode is active, and the 'tibbed' state will reset after one minutes rather than one day.
!
999px

Console