make-interfaces-feel-better

Details that make interfaces feel better Great interfaces rarely come from a single thing. It's usually a collection of small details that compound into a great experience. Apply these principles when building or reviewing UI code. Quick Reference Category When to Use Typography Text wrapping, font smoothing, tabular numbers Surfaces Border radius, optical alignment, shadows, image outlines, hit areas Animations Interruptible animations, enter/exit transitions, icon animations, scale on press Performance Transition specificity, will-change usage Core Principles 1. Concentric Border Radius Outer radius = inner radius + padding. Mismatched radii on nested elements is the most common thing that makes interfaces feel off. 2. Optical Over Geometric Alignment When geometric centering looks off, align optically. Buttons with icons, play triangles, and asymmetric icons all need manual adjustment. 3. Shadows Over Borders Layer multiple transparent box-shadow values for natural depth. Shadows adapt to any background; solid borders don't. 4. Interruptible Animations Use CSS transitions for interactive state changes — they can be interrupted mid-animation. Reserve keyframes for staged sequences that run once. 5. Split and Stagger Enter Animations Don't animate a single container. Break content into semantic chunks and stagger each with ~100ms delay. 6. Subtle Exit Animations Use a small fixed translateY instead of full height. Exits should be softer than enters. 7. Contextual Icon Animations Animate icons with opacity, scale, and blur instead of toggling visibility. Use exactly these values: scale from 0.25 to 1, opacity from 0 to 1, blur from 4px to 0px. If the project has motion or framer-motion in package.json, use transition: { type: "spring", duration: 0.3, bounce: 0 } — bounce must always be 0. If no motion library is installed, keep both icons in the DOM (one absolute-positioned) and cross-fade with CSS transitions using cubic-bezier(0.2, 0, 0, 1) — this gives both enter and exit animations without any dependency. 8. Font Smoothing Apply -webkit-font-smoothing: antialiased to the root layout on macOS for crisper text. 9. Tabular Numbers Use font-variant-numeric: tabular-nums for any dynamically updating numbers to prevent layout shift. 10. Text Wrapping Use text-wrap: balance on headings. Use text-wrap: pretty for body text to avoid orphans. 11. Image Outlines Add a subtle 1px outline with low opacity to images for consistent depth. 12. Scale on Press A subtle scale(0.96) on click gives buttons tactile feedback. Always use 0.96. Never use a value smaller than 0.95 — anything below feels exaggerated. Add a static prop to disable it when motion would be distracting. 13. Skip Animation on Page Load Use initial={false} on AnimatePresence to prevent enter animations on first render. Verify it doesn't break intentional entrance animations. 14. Never Use transition: all Always specify exact properties: transition-property: scale, opacity. Tailwind's transition-transform covers transform, translate, scale, rotate. 15. Use will-change Sparingly Only for transform, opacity, filter — properties the GPU can composite. Never use will-change: all. Only add when you notice first-frame stutter. 16. Minimum Hit Area Interactive elements need at least 40×40px hit area. Extend with a pseudo-element if the visible element is smaller. Never let hit areas of two elements overlap. Common Mistakes Mistake Fix Same border radius on parent and child Calculate outerRadius = innerRadius + padding Icons look off-center Adjust optically with padding or fix SVG directly Hard borders between sections Use layered box-shadow with transparency Jarring enter/exit animations Split, stagger, and keep exits subtle Numbers cause layout shift Apply tabular-nums Heavy text on macOS Apply antialiased to root Animation plays on page load Add initial={false} to AnimatePresence transition: all on elements Specify exact properties First-frame animation stutter Add will-change: transform (sparingly) Tiny hit areas on small controls Extend with pseudo-element to 40×40px Review Checklist Nested rounded elements use concentric border radius Icons are optically centered, not just geometrically Shadows used instead of borders where appropriate Enter animations are split and staggered Exit animations are subtle Dynamic numbers use tabular-nums Font smoothing is applied Headings use text-wrap: balance Images have subtle outlines Buttons use scale on press where appropriate AnimatePresence uses initial={false} for default-state elements No transition: all — only specific properties will-change only on transform/opacity/filter, never all Interactive elements have at least 40×40px hit area Reference Files typography.md — Text wrapping, font smoothing, tabular numbers surfaces.md — Border radius, optical alignment, shadows, image outlines animations.md — Interruptible animations, enter/exit transitions, icon animations, scale on press performance.md — Transition specificity, will-change usage Weekly Installs787Repositoryjakubkrehel/mak…l-betterGitHub Stars152First Seen5 days agoSecurity AuditsGen Agent Trust HubPassSocketPassSnykPassInstalled oncodex780opencode780cursor779kimi-cli778gemini-cli778amp778