What are "Postboxes"? Facebook has a feature offering colorful backgrounds for short, text-only posts. Postboxes for Friendica offers something similar, but it is not limited to short or text-only posts (though it still works best with those). Friendica's gradient and pattern backgrounds, however, are accomplished with pure CSS (no images), and are therefore very fast and lightweight.
How to use: Put your text/content inside the "class" BBcode like so:
[class=postbox-name]Your Text Here[/class]
Type the name in all lowercase letters with no spaces. Each sample below shows the name.
Some also show the old names in parenthesis, which are still valid and have been mapped
to the new styles. If a style is not available on a given server, or if you misspell the name,
the "default" style will be used (inherited font color against theme's post background color).
Limitations: Requires either using the "Frio" theme with the "Bookface" scheme, or the "Postbox" add-on be installed, or the "Zen Postbox" add-on be installed. Postboxes shared to servers without them see only the un-styled content fo the Postbox, this includes other platforms like Mastodon, Bluesky, Tumblr, etc. Note that there are currently issues with how Postboxes display in posts shared to Diaspora and Hubzilla.
The animated backgrounds shown below are only available if either the "Postbox" or "Zen Postbox" add-on is installed on the server.
These are only available if either the "Postbox" or "Zen Postbox" add-on is installed on the Friendica server.