i18n(fr): update guides/css-and-tailwind.mdx

[HiDeoo]

What kind of changes does this PR include?

• Changes or translations of Starlight docs site content

Description

This pull request updates the french version of the guides/css-and-tailwind.mdx page with the changes from #903.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 1c529d0

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[netlify]

✅ Deploy Preview for astro-starlight ready!

Name	Link
🔨 Latest commit	1c529d0
🔍 Latest deploy log	https://app.netlify.com/sites/astro-starlight/deploys/653bb574502e5300089791c6
😎 Deploy Preview	https://deploy-preview-1000--astro-starlight.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.
Lighthouse	1 paths audited Performance: 100 (no change from production) Accessibility: 100 (no change from production) Best Practices: 100 (no change from production) SEO: 100 (no change from production) PWA: - View the detailed breakdown and full score reports

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[delucis]

LGTM! Thanks for the update @HiDeoo 🚀