Upgrade to Tailwind v4

[zenoachtig]

No description provided.

[changeset-bot]

🦋 Changeset detected

Latest commit: 115ecdf

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 4 packages

Name	Type
@gitbook/react-math	Patch
gitbook	Patch
@gitbook/icons	Patch
@gitbook/react-contentkit	Patch

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

[github-actions]

Summary of the deployments:

Version	URL	Status
Vercel	https://gitbook-v2-7iygo2l8s-gitbook.vercel.app	✅
Cloudflare	https://9589a090-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	2v	2c
GitBook	https://gitbook-v2-7iygo2l8s-gitbook.vercel.app/url/gitbook.com/docs	https://9589a090-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.com/docs
E2E	https://gitbook-v2-7iygo2l8s-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open	https://9589a090-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.gitbook.io/test-gitbook-open

[argos-ci]

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Build	Status	Details	Updated (UTC)
customers-v2 (Inspect)	👍 Changes approved	44 changed	Jul 25, 2025, 9:47 AM
v2-cloudflare (Inspect)	👍 Changes approved	133 changed	Jul 25, 2025, 9:52 AM
v2-vercel (Inspect)	👍 Changes approved	134 changed	Jul 25, 2025, 9:49 AM

[gregberge]

There are lot of changes in Argos, we should aim for a ISO migration here.

[zenoachtig]

There are lot of changes in Argos, we should aim for a ISO migration here.

I've now gotten it as close to 1:1 as I could. I've adjusted some margins to be close to what it was before. I've gone through Argos extensively, the detected changes are all just small shifts in margin because I had to re-do the page header margins because some of the space-* utilities changed how they worked.