[Content Types]: Fix extra Page padding causing vertical scrollbar

[yogeshbhutkar]

What, Why, and How?

Related to #77600

While testing the Content Types, I noticed that the dashboard displayed an unnecessary vertical scrollbar. The issue was caused by padding applied directly to the Page component, which increased the page height enough to trigger scrolling.

This PR removes that padding from Page and applies it to the Tab's wrapper instead, matching how it is used elsewhere and fixing the extra scrollbar. Please feel free to close this PR if this is already being handled elsewhere.

Ref:

gutenberg/routes/template-list/style.scss

Lines 5 to 8 in 935d434

	.routes-template-list__tabs-wrapper {
	border-bottom: 1px solid $gray-100;
	padding: 0 $grid-unit-30;
	}

Testing Instructions

1. Enable the "Content Types" Experiment.
2. Navigate to Settings → Content Types.
3. Verify that the unnecessary vertical scrollbar does not appear.

Screenshots or screencast

Before	After

Use of AI Tools

None

[Copilot]

Pull request overview

This PR addresses an unnecessary vertical scrollbar in the experimental Content Types admin screen by removing padding from the top-level Page container and applying spacing to the tabs header wrapper instead, aligning the layout with similar admin patterns (e.g., template list tabs wrapper).

Changes:

• Removed .content-types-page padding to avoid increasing the overall page height.
• Added horizontal and top padding to .content-types-tabs-wrapper while keeping the existing bottom border.

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Co-authored-by: yogeshbhutkar <yogeshbhutkar@git.wordpress.org>

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[im3dabasia]

Thanks for the PR, @yogeshbhutkar.

I observed the same pattern on two other screens, the Connectors screen and the Gutenberg Experiments screen, where the top-level header has 24px left/right padding and 16px top/bottom padding applied. For consistency, we should match that here as well.

That said, this PR is already a solid improvement, and aligning it with the other similar screens would make the experience even more consistent overall.

Attaching some screenshots

This PR

Connectors

Experiments