fix: pull in site header changes

[emilyjablonski]

Pull Request Template

Issue Overview

This PR addresses #issue

• This change addresses the issue in full
• This change addresses only certain aspects of the issue
• This change is a dependency for another issue
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Description

Please include a summary of the change and which issue(s) is addressed. Please also include relevant motivation and context. List any dependencies that are required for this change.

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Describe the tests that you ran to verify your changes. Please also list any relevant details for your test configuration.

Checklist:

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• Any dependent changes have been merged and published in downstream modules
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• Either explicitly ask a clarifying question, request changes, or approve the PR if there are small remaining changes but the PR is otherwise good to go

On Merge:

If you have one commit and message, squash. If you need each message to be applied, rebase and merge.

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