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We support Markdown pretty much everywhere on CodePen. We just tweaked it a little bit to now allow tables everywhere. You could always do HTML tables, but Markdown tables are a little quicker to write out. They look like this:
| | this | little | piggy | |-----|-------|---------|------:| | one | alpha | hello | 0.001 | | two | beta | goodbye | 0.002 |
The right row is right-aligned. It's pretty easy to memorize, but there is a great generator tool if you forget.
Used a Pen description, you'll get simple styles like this:
Feel free to use them in comments or on your blog as well.