examples: Remove redundant border declaration (#11042)
This PR removes a **redundant CSS border declaration**
Previously, both `border: none;` and `border: 1px solid transparent;`
were declared in sequence.
Since the second declaration fully overrides the first, the `border:
none;` rule was unnecessary and triggered Biome's
`noDuplicateDeclarations` lint warning.
By keeping only `border: 1px solid transparent;`, we ensure:
- clean and intentional styling
- preserved layout stability for hover/focus states
- improved lint compliance and maintainability
---
### Changes
- Removed duplicate `border: none;` rule
- Retained `border: 1px solid transparent;` for layout consistency
- Ensured alignment with Biome linting rules
---
### Motivation
The first border declaration provided no functional benefit, as it was
immediately overridden.
This cleanup improves clarity, prevents false-positive lint issues, and
aligns with best practices for CSS resets and UI consistency.
---
### Breaking Changes
None — visual and functional behavior remains identical.
