Sidenote

An inline footnote marker that reveals its note in a popover on click, instead of sending the reader to the bottom of the page and back. Fully keyboard operable — Enter/Space to open, Escape or an outside click to close.

Long-form · Astro · Subscription · commercial licence · v1.0.1 · updated 2026-10-15 · Live demo

Install

velocityx add sidenote

Subscription component. Run velocityx login with your key first — get one.

---
import Sidenote from '../components/velocity/sidenote/Sidenote.astro';
---
<Sidenote />

Props

Prop	Type	Default	Description
number	number | string	required	—

Files written

velocityx drops these into your project:

• components/velocity/sidenote/Sidenote.astro

Peer dependencies

None.

Theming

Colours come from the primary-* / accent-* Tailwind scales, so this drops into a project that is not Velocity without dragging our brand in. Install the contract once:

velocityx theme

Then set your whole brand in one place — raw RGB channels, not hex (a hex here silently breaks every opacity variant):

:root {
  --vx-brand: custom;
  --vx-primary-600: 220 38 38;
}

There is no component-level font-family anywhere in the library — your font cascade wins.

Licence

Commercial, for the duration of an active Velocity X subscription. The source is served by the licence-gated endpoint, never by the public CDN.