[Frontend Easy] style: Align invoice page spacing utilities

[nikhilb2]

Summary

Align a few invoice page spacing values with existing Tailwind utility conventions.

Acceptance Criteria

• Update targeted spacing in frontend/src/pages/invoices/InvoicesPageView.tsx
• Keep visual layout unchanged or near-identical
• Reuse existing utility patterns from nearby components
• Run: cd frontend && npm run lint

[snakefood3232]

I noticed the need to align invoice page spacing values with Tailwind utility conventions. I'd handle this by reviewing and updating the spacing utilities in InvoicesPageView.tsx, ensuring alignment with existing patterns for minimal visual disruption. I can have a PR up in about 24 hours. I've previously aligned and optimized similar page layouts using Tailwind in other projects.

[saijaku0]

Hey. I'd like to take this on

[nikhilb2]

Thanks both! To avoid duplicate work: whoever plans to take #339, please reply confirming you’ll start within the next 24 hours and I’ll assign it. If not, I’ll assign it to the other person.
Also noting @snakefood3232 is interested in #338 as well.