VOTE-1937: PX design updates - State pages

[mlloydbixal]

Jira ticket

VOTE-1937

Description

Includes some changes to masthead shared by basic pages plus additional rule to use narrow container on state page content.

Deployment and testing

QA/Testing instructions

1. Compare a state page to latest PX designs https://www.figma.com/design/u82ICmmHNBKpE1Tw4nsO0K/Vote.gov-Redesign-2024-(Master)?node-id=8989-24652&m=dev

Checklist for the Developer

• A link to the JIRA ticket has been included above.
• No merge conflicts exist with the target branch.
• Automated tests have passed on this PR.
• A reviewer has been designated.
• Deployment and testing steps have been documented above, if applicable.

Checklist for the Peer Reviewers

• The file changes are relevant to the task objective.
• Code is readable and includes appropriate commenting.
• Code standards and best practices are followed.
• QA/Test steps were successfully completed, if applicable.
• Applicable logs are free of errors.