Pure CSS dropdown panel with fully customizable content. Supports hover/click toggle, inline mode, multiple positions, and custom panel content.
.droppanel. Structure:
droppanel > label/span/host > [data-role="panel"].<div data-role="panel"> as container.label > input[type=checkbox] for click toggle..droppanel-inline for inline expansion (content pushes siblings).data-role="host" on trigger for arrow indicator. Use data-expanded="true" for
persistent open..droppanel-bottom-*, .droppanel-top-*, .droppanel-end-*,
.droppanel-start-*.bubble class on the panel element for bubble-style appearance.This content gets pushed down.
Bottom center
Bottom start
Bottom end
Top center
Top start
Top end
End center
End top
End bottom
Start center
Start top
Start bottom