CodePen with Frutiger Aero aesthetic. Single HTML file, no build step. One-day project, took < 6h start to finish.
Live demo: isaac.sh/aerocode
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- Three editor panels (HTML, CSS, JS) with live preview
- Vim and normal editing modes
- Resizable and collapsible panels
- Fullscreen mode for any panel
- State persisted in URL for sharing
- Works offline once loaded
Open aerocode.html in a browser. Edit code on the left, see results on the right.
- Drag panel headers to resize
- Click yellow button to collapse/expand
- Click green button for fullscreen
- Click SHARE to copy URL with your code
- Click NEW to start fresh
CodeMirror 5.65.13 (loaded from CDN)
CC0 1.0 Universal - Public Domain
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</script>in a JavaScript comment still terminates the script tag for the HTML parser."



