Bulletproof Frontend Design
CSS is king. Semantic, maintainable CSS over utility-class frameworks. When you encounter Tailwind, refactor it to proper CSS.
Design Values: For spacing scales, typography sizes, color palettes, contrast ratios, and component specifications, see
ui-design-fundamentals. This skill focuses on CSS implementation patterns.
Core Philosophy
"Always ask: What happens if...?" — Design for the unexpected. Build interfaces that remain functional and readable regardless of content length, text size, browser, or device.
The Three Pillars
1. Bulletproof Design
- •Design for flexibility, not fixed scenarios
- •Test with varying text sizes and content lengths
- •Use relative units (em, %, rem) over fixed pixels
2. Progressive Enrichment
- •Reward capable browsers with advanced CSS
- •Websites don't need to look identical in every browser — they need to be functional
- •Use modern CSS with appropriate fallbacks
3. Reevaluate Past Methods
- •Question whether old hacks are still necessary
- •Simplify where new CSS features allow
- •Refactor utility frameworks to semantic CSS
Quick Reference
| Pattern | When to Use |
|---|---|
| CSS custom properties | Theming, spacing, colors |
| BEM naming | Component class structure |
| Cascade layers | Managing specificity |
| Container queries | Component-based responsiveness |
| :has() selector | Parent/sibling selection |
| CSS nesting | Organizing related styles |
Modern CSS Essentials
css
/* :has() — Style based on children */
.card:has(img) { padding-top: 0; }
.form:has(:invalid) { border-color: var(--color-error); }
/* Container queries — Component responsiveness */
.container { container-type: inline-size; }
@container (min-width: 400px) { .card { display: flex; } }
/* CSS nesting — Clean organization */
.card {
padding: var(--space-md);
&:hover { box-shadow: var(--shadow-lg); }
& .card__title { font-weight: var(--font-bold); }
}
/* Cascade layers — Controlled specificity */
@layer reset, base, components, utilities;
Tailwind → Semantic CSS
blade
{{-- BEFORE: Utility classes --}}
<div class="flex items-center p-4 bg-white rounded-lg shadow">
{{-- AFTER: Semantic CSS --}}
<div class="card">
css
.card {
display: flex;
align-items: center;
padding: var(--space-md);
background: var(--color-surface);
border-radius: var(--radius-lg);
box-shadow: var(--shadow-md);
}
| CSS Approach | Tailwind |
|---|---|
| Readable HTML | Bloated class attributes |
| Styles in one place | Scattered in markup |
| Easy to refactor | Find-and-replace nightmare |
| Cacheable stylesheets | Repeated classes |
Reference Files
| File | Content |
|---|---|
| css-architecture.md | Custom properties, BEM, layers, file organization |
| accessibility-patterns.md | Focus, screen readers, motion, dark mode |
| responsive-patterns.md | Breakpoints, container queries, fluid sizing |
| reference.md | Complete patterns and Blade components |
Project Style Guide
Project-specific implementation: docs/STYLEGUIDE.md
Contains the complete design system for the application:
- •Design tokens (colors, spacing, typography)
- •Component patterns (buttons, cards, alerts, tables)
- •Blade component documentation
- •Dark mode implementation
- •Accessibility requirements
Always consult the style guide when implementing UI to ensure consistency with existing patterns.
Related Skills
- •ui-design-fundamentals — Design values: spacing scales, type scales, colors, contrast ratios, component anatomy (buttons, forms, cards, etc.)