Heads up! This blog post hasn't been updated in over 2 years. CodePen is an ever changing place, so if this post references features, you're probably better off checking the docs. Get in touch with support if you have further questions.

Sometimes you just need A LOT of space to code in. No problem on CodePen. You can expand any of the three editors in either direction. With CodePen PRO, you also have Live View, which you can use to open a separate window as the live preview.

Check out this video to see how it works: