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Accordion with Left Plus/Minus Toggle for Solid

An onboarding accordion with a plus before each step. Create your workspace starts open first.

UI library: Ark UI

Four onboarding steps in a bordered stack. A plus sits before each title and turns into a minus. Create your workspace starts open.

Use it for a checklist where the toggle should lead. If the steps are just a sequence, a Card per step can be clearer. In Solid, Ark UI does not mark a step complete.

Preview

Preview width

Installation

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Anatomy

Accordion anatomy: root, item, item trigger, item content, item indicator

Usage

<Accordion class="w-full max-w-md -space-y-px" defaultValue={["workspace"]}>
    {items.map(item => <AccordionItem class="overflow-hidden border bg-background px-4 first:rounded-t-lg last:rounded-b-lg" value={item.value}>
        <AccordionTrigger class="hover:no-underline **:data-[slot=accordion-trigger-icon]:hidden">
          <span class="flex w-full items-center gap-3">
            <span class="relative size-4 shrink-0">
              <PlusIcon aria-hidden="true" class="absolute inset-0 size-4 text-muted-foreground transition-opacity duration-200 group-aria-expanded/accordion-trigger:opacity-0" />
              <MinusIcon aria-hidden="true" class="absolute inset-0 size-4 text-muted-foreground opacity-0 transition-opacity duration-200 group-aria-expanded/accordion-trigger:opacity-100" />
            </span>
            <span class="flex-1 text-start">{item.title}</span>
          </span>
        </AccordionTrigger>
        <AccordionContent class="ps-7">
          <p class="text-muted-foreground">{item.content}</p>
        </AccordionContent>
      </AccordionItem>)}
  </Accordion>

FAQ

How does the plus end up before the title?

The plus and minus sit in a relative size-4 box, the first child of a gap-3 row, with the title after it in flex-1 text-start. **:data-[slot=accordion-trigger-icon]:hidden hides the built-in chevron. group-aria-expanded/accordion-trigger fades the plus out and the minus in over duration-200, and both icons are aria-hidden.

Why is the answer indented?

ps-7 on AccordionContent matches the 16px icon plus the 12px gap-3, so the answer lines up under the title.

Why does the workspace step start open?

defaultValue={["workspace"]} opens the workspace step on first render. The string matches that item's value.

How do I let several items stay open at once?

One open item is the default. Add multiple to Accordion to let several stay open, and list every item that should start open in the defaultValue array.

How do the row borders meet?

-space-y-px on Accordion pulls the rows together so neighboring borders share one line. Each AccordionItem has border, px-4, first:rounded-t-lg and last:rounded-b-lg.

Is keyboard navigation built in?

Yes. Each trigger is a button with aria-expanded and aria-controls, and Enter or Space toggles it. The arrow keys move between triggers, and Home and End jump to the first and last.

API Reference

Accordion

Sets defaultValue={["workspace"]} and value={item.value}. The rest is on the Accordion page.