Sena Aruoba

Sena Aruoba works at the boundary between design and engineering — equally comfortable in Figma and a stylesheet, and deeply invested in the gap between them. With a background in visual design and front-of-the-frontend development, Sena's writing focuses on CSS craft, design system architecture, and the accessibility work that makes interfaces genuinely usable for everyone. Sena's articles are for engineers who want their work to look intentional, not just functional.

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CSS Cascade Layers: The Feature That Finally Fixes Specificity Wars

Specificity conflicts with third-party CSS, utility classes, and component styles are one of the most frustrating parts of scaling a CSS codebase. @layer doesn't just help — it fundamentally changes how the cascade works. Here's the mental model and the setup that makes it click.