Example not working from bits-ui.com in local

[xiaojiuwo1993]

I create a svelte project by

npx sv create myapp

with tailwindcss installed.
here is vite.config

import tailwindcss from '@tailwindcss/vite';
import { sveltekit } from '@sveltejs/kit/vite';
import { defineConfig } from 'vite';

export default defineConfig({ plugins: [tailwindcss(), sveltekit()] });

here is layout.css

@import 'tailwindcss';
@plugin '@tailwindcss/typography';

here is my package.json

{
    "name": "frontend-new",
    "private": true,
    "version": "0.0.1",
    "type": "module",
    "scripts": {
        "dev": "vite dev",
        "build": "vite build",
        "preview": "vite preview",
        "prepare": "svelte-kit sync || echo ''",
        "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
        "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch"
    },
    "devDependencies": {
        "@sveltejs/adapter-auto": "^7.0.0",
        "@sveltejs/kit": "^2.50.2",
        "@sveltejs/vite-plugin-svelte": "^6.2.4",
        "@tailwindcss/typography": "^0.5.19",
        "@tailwindcss/vite": "^4.1.18",
        "svelte": "^5.49.2",
        "svelte-check": "^4.3.6",
        "tailwindcss": "^4.1.18",
        "typescript": "^5.9.3",
        "vite": "^7.3.1"
    },
    "dependencies": {
        "bits-ui": "^2.15.5",
        "phosphor-svelte": "^3.1.0"
    }
}

I copy the +layout.svelte and +page.svelte code from https://www.bits-ui.com/docs/components/button on open in stackblitz.
However the output is not correct.

Thanks for helping me.
I create a svelte project by
npx sv create myapp

with tailwindcss installed.
here is vite.config

import tailwindcss from '@tailwindcss/vite';
import { sveltekit } from '@sveltejs/kit/vite';
import { defineConfig } from 'vite';

export default defineConfig({ plugins: [tailwindcss(), sveltekit()] });


I copy the +layout.svelte and +page.svelte code from https://www.bits-ui.com/docs/components/button on open in stackblitz.
However the output is not correct.

Thanks for helping me.
<img width="1042" height="548" alt="image" src="https://github.com/user-attachments/assets/5f4e1ef4-73de-4670-aa17-12053c167aee" />

[xiaojiuwo1993]

The official example is using unocss, however the doc did not specify whether its using tailwindcss or unocss