Div tag for whole page about bookstack HOT 3 OPEN

There's a lot that the editor will filter out or prevent in an attempt to keep content simple and standard.
We don't (and likely won't) provide official additional controls for this.
If you have an example of what you're attempting to do I may be able to find an alternative method/suggestion.

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I am trying to do something like this so i can apply styles to that specific portion.
But after saving its turning like this.

It works perfectly fine if I enclose a or figure tag inside div.

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For something like that you'd need to get inventive, and use something like:

<style>
#bkmrk-this-page-is-marked-,
#bkmrk-this-page-is-marked-+hr,
#bkmrk-this-page-is-marked-+hr+h3 {
  color: red;
}
</style>

There is also tag classes that can help target customizations to specific pages using tags applied the the page:
https://www.bookstackapp.com/docs/admin/hacking-bookstack/#tag-classes

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