Just a note for future folks, be careful as this references areas by count, i.e. span4, so is very susceptible to platform changes and individual environment changes which could result in different content disappearing. AS always, be careful.
Thanks! Any suggestions to further target it to just this page?
Not sure if the general page has an ID, if it was a custom page then sure, but the issue would be on the page too. Say next month Docebo releases an update to this page and shifts the folder you are hiding to span5 and the new content is in span4, unless you are incredibly on top of your customizations, the folder you were trying to hide will be shown, and the new item will be hidden. You may not make the connection from the announcement as the features are not necessarily related.
All falls into the technical debt and maintenance bucket. The more you tweak, the fuller the bucket and potential long term issues. SOme tweaks have higher risk of that then others, ones that rely on selecting the order of containers as exist today tend to be higher risk.