Template to handle the HTML structure of a header notes block.

This is designed to be a re-useable block that other header templates can use for consistency.

Example

{{header/notes block
 | style = border-bottom: 1px solid #A0A0A0; background-color: #FAFAFF
 | sister = {{plain sister|wikipedia=Foobar}}
 | shortcut = SHORTCUT
 | content = Some freeform notes

And some more notes
}}

Shortcut:
SHORTCUT

Some freeform notes

And some more notes

The block has class header_notes.