feat(header): update header spacing and sizing

[alizedebray]

📄 Description

Update header styles to match the Figma design. This PR focuses on the post-header, the post-mainnavigation and post-megadropdown will be finalized in another PR.

🚀 Demo

Updated version:

• Header docs
• Portal header: user logged out | user logged in
• Microsite header: user logged out | user logged in
• Jobs header
• One-Pager header

Current version to compare to:

• Header docs
• Portal header: user logged out | user logged in
• Microsite header: user logged out | user logged in
• Jobs header
• One-Pager header

---

🔮 Design review

• [ ] Design review done
• [x] No design review needed

📝 Checklist

• ✅ My code follows the style guidelines of this project
• 🛠️ I have performed a self-review of my own code
• 📄 I have made corresponding changes to the documentation
• ⚠️ My changes generate no new warnings or errors
• 🧪 I have added tests that prove my fix is effective or that my feature works
• ✔️ New and existing unit tests pass locally with my changes

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 533c2a298ffa4acf1f6f4f1e41153544f8c0f419

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

This PR includes changesets to release 14 packages

Name	Type
@swisspost/design-system-styles	Major
@swisspost/design-system-documentation	Patch
@swisspost/design-system-components-angular-workspace	Major
@swisspost/design-system-components	Major
@swisspost/internet-header	Major
@swisspost/design-system-nextjs-integration	Major
@swisspost/design-system-styles-primeng-workspace	Major
@swisspost/design-system-styles-primeng	Major
@swisspost/design-system-components-react	Major
@swisspost/design-system-components-angular	Major
@swisspost/design-system-changelog-github	Major
@swisspost/design-system-eslint	Major
@swisspost/design-system-icons	Major
@swisspost/design-system-tokens	Major

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[swisspost-bot]

Related Previews

• https://preview-6661--swisspost-design-system-next.netlify.app?devModeEnabled=true

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[alizedebray]

If you can ensure this is not the case, I'm fine with it. I think it looks better already, than when I checked it on the preview link the first time, but I'm not sure if it may leak to an element like the one I showed above.

Tell me if you're sure, then I will accept the PR ;)

I checked the output and these styles are now only applied to links and buttons that are direct children of the post-header (either standalone or in a list):

They should therefore not leak into menus or drop-downs anymore.