Why do I not see the 4 colums ?

Hi there, Im adhering to this tutorial : [https://learn.wordpress.org/lesson/create-custom-inspector-panel-controls/](https://discover.wordpress.org/lesson/generate-personalized-inspector-panel-controls/) In accordance to the tutorial I have to see a 4 column layout on my editor or frontend but I do not see it I still see 1 column My code so far : block.json “` { “$schema”: “https://schemas.wp.org/trunk/block.json”, “apiVersion”: 2, “title”: “develop-block/multi-columns”, “edition”: “.1.”, “title”: …

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