Il modo giusto per personalizzare la pagina di login e altre cose

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You might want to read this, which I think fits what you are looking to do, but just realize it is meant for sub-categories

Display boxes for subcategories above topic list

This guide explains how to display boxes for subcategories above the topic list in Discourse. Required user level: Administrator (or moderator if the moderators manage categories and groups setting is enabled) There are two ways to display a list of sub-categories within the parent category: in boxes with only the name, logo, and description in boxes with name, logo, and a list of some featured topics You can enable these styles by visiting the parent cate…