shadcn-svelte generates the track with `data-horizontal:` / `data-vertical:` variants, which Tailwind compiles to `[data-horizontal]` — an attribute nothing sets, since the orientation is carried as data-orientation. The track got no height, leaving only the thumb on screen. Use the `data-[orientation=…]` form the rest of ui/ already uses.
sv
Everything you need to build a Svelte project, powered by sv.
Creating a project
If you're seeing this, you've probably already done this step. Congrats!
# create a new project in the current directory
npx sv create
# create a new project in my-app
npx sv create my-app
Developing
Once you've created a project and installed dependencies with npm install (or pnpm install or yarn), start a development server:
npm run dev
# or start the server and open the app in a new browser tab
npm run dev -- --open
Building
To create a production version of your app:
npm run build
You can preview the production build with npm run preview.
To deploy your app, you may need to install an adapter for your target environment.