`Tabs` give you the common tabbed layout found in many applications for decades.  The `Accordion`
demo just uses the `Tab` component with `vertical={true}`.  It needs other Svelte components to
place into the tab panels, but it's implemented mostly in CSS. That means if you need to do a
different presentatino or can't use components for the panels then you can use the `<tab>` from
`static/global.css`.