# Vertical Slider

> A console-fader vertical slider with a bottom-anchored LED fill, an engraved tick scale, a machined fader cap, and full keyboard support — Mixdown design system.

- Category: Slider
- Frameworks: Vanilla, React + CSS, React + Tailwind
- Design system: Tensor
- Dark mode: yes
- Access: premium (Atheros AI Pass)
- Tags: vertical
- Page: https://builder.atheros.ai/components/vertical-slider
- Preview: https://d17nmjscumqk5d.cloudfront.net/builder/templates/tpl_builder_vertical_slider/preview-0a4efed7ef99.webp

## Features

- Vertical orientation exposed via `aria-orientation="vertical"`
- Bottom-anchored LED fill driven by a `--fill` custom property and `transform: scaleY`
- Machined fader-cap thumb with an oxblood index line, riding a recessed slot
- Engraved dB-style tick scale on both sides of the slot, rendered in pure CSS
- Real pointer dragging with pointer capture so the drag continues outside the control
- Full keyboard support with Arrow, Home, End, PageUp, and PageDown
- Exposes `role="slider"` with `aria-valuenow`, `aria-valuemin`, and `aria-valuemax`
- Animated speaker icon whose signal waves light up in the accent color
- Intentional dark mode — the faceplate drops to studio graphite and the accent lifts to a lit LED
- Fully respects `prefers-reduced-motion`

## Accessibility

- **Slider role** — `role="slider"` with `aria-orientation="vertical"`, `aria-valuenow`, `aria-valuemin`, `aria-valuemax`
- **Keyboard control** — Arrow keys step, Home/End jump to bounds, PageUp/PageDown move by a larger step
- **Decorative parts** — Rail, fill, and thumb carry `aria-hidden="true"`; ticks are pseudo-elements
- **Focus indicators** — `:focus-visible` with `--ring` halo on the fader cap and outline fallback
- **Reduced motion** — `prefers-reduced-motion: reduce` disables all animations

## Keyboard shortcuts

- `ArrowUp` — Increase the value by one step
- `ArrowDown` — Decrease the value by one step
- `Home` — Jump to the minimum value
- `End` — Jump to the maximum value
- `PageUp` — Increase the value by a larger step
- `PageDown` — Decrease the value by a larger step

## Common questions

**Which frameworks is Vertical Slider available in?**

Vertical Slider ships as Vanilla, React + CSS and React + Tailwind — HTML, CSS, JS and React source you can copy, download or clone into Atheros AI Builder.

**Is Vertical Slider free?**

Vertical Slider is a premium component. Anyone can preview it; the source, downloads and AI customisation are included with Atheros AI Pass.

**Does Vertical Slider support dark mode?**

Yes. Vertical Slider ships light and dark themes, both drawn from the Tensor design system's tokens. Switch the preview to dark mode to compare them.

## Get the code

Preview Vertical Slider live, then sign in to copy or download the source, apply another design system, or ask the AI assistant to change it: https://builder.atheros.ai/components/vertical-slider

Every component on https://builder.atheros.ai is also reachable from Claude Code, Cursor and Codex through the Atheros MCP server (paid plans). Component index: https://builder.atheros.ai/llms-components.txt