This template provides the correct styling with which to embed an {{Infobox}} or {{Sidebar}} within another template (usually another infobox or sidebar).
(Technical note: Using {{subinfobox bodystyle}} rather than Infobox's child parameter to embed an {{Infobox}} means that the outermost table used to contain the (otherwise typical stand-alone) Infobox is retained.)
When using {{subinfobox bodystyle}} (as {{subsidebar bodystyle}}) to embed a {{Sidebar}}, the embedded Sidebar's navbar parameter (see documentation) also needs to be set to "off" (|navbar=off):
This template provides the correct styling with which to embed an {{Infobox}} or {{Sidebar}} within another template (usually another infobox or sidebar).