Open
Description
On challenges of legacy responsive-web-design, we do not have anymore the buttons to show/hide the file/preview/console panes and we have three panels side-by-side instead of previous "mosaic". Instructions are displayed on the left instead of inline. This is also the case for other curriculum like front-end-development-libraries.
We need to identify what triggers this change of behavior and implement it (or decide we are ok with a UI slightly different from online but more "powerful", maybe there is no real downside to using the other UI).
Beware this must work well on both mobile and desktop.