style: Minor design changes

[HarisSQA]

• Button in QR code
• Background of right side of modal
• Get a Wallet title centered

Description

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

Checklist:

• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings

Type of change.

• [ ] FIX - a PR of this type patches a bug.
• [ ] FEATURE - a PR of this type introduces a new feature.
• [ ] BUILD - a PR of this type introduces build changes.
• [ ] CI - a PR of this type introduces CI changes.
• [ ] DOCS - a PR of this type introduces DOCS improvement.
• [x] STYLE - a PR of this type introduces style changes.
• [ ] REFACTOR - a PR of this type introduces refactoring.
• [ ] PERFORMANCE - a PR of this type introduces performance changes.
• [ ] TEST - a PR of this type adds more tests.
• [ ] CHORE - a PR introduces other changes than the specified above.

[amirsaran3]

@HarisSQA I checked the code and there are still no changes to the modal-ui-js package. Also there are conflicts.

[kujtimprenkuSQA]

The modal-ui-js has not been aligned yet!