How to use
- Copy the installation command and review the source package before installing it in your own agent environment.
- Check the source document for required tools, credentials and supported hosts.
- Describe your input and desired deliverable; review the output against the source material.
npx skills add https://github.com/hoodini/ai-agents-skills --skill mobile-responsivenessBefore you start
- Installation does not include a model subscription, API allowance or permission to access your files.
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Original skill document
Rendered from the source repository. Headings, examples, code, tables, links, and referenced images are preserved.
Mobile Responsiveness
Build responsive, mobile-first web applications.
Mobile-First Breakpoints
css
/* Mobile first - no media query needed for mobile base */
.container {
padding: 1rem;
}
/* Tablet */
@media (min-width: 768px) {
.container {
padding: 2rem;
}
}
/* Desktop */
@media (min-width: 1024px) {
.container {
padding: 3rem;
max-width: 1200px;
margin: 0 auto;
}
}
/* Large desktop */
@media (min-width: 1280px) {
.container {
max-width: 1400px;
}
}Tailwind Breakpoints
tsx
<div className="
p-4 /* Mobile: padding 1rem */
md:p-8 /* Tablet 768px+: padding 2rem */
lg:p-12 /* Desktop 1024px+: padding 3rem */
xl:max-w-6xl /* Large 1280px+: max-width */
">
<h1 className="
text-2xl /* Mobile */
md:text-3xl /* Tablet */
lg:text-4xl /* Desktop */
">
Responsive Heading
</h1>
</div>Fluid Typography
css
:root {
/* Fluid font size: 16px at 320px viewport, 20px at 1200px viewport */
--font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.25rem);
/* Fluid heading */
--font-size-h1: clamp(2rem, 1.5rem + 2.5vw, 4rem);
}
body {
font-size: var(--font-size-base);
}
h1 {
font-size: var(--font-size-h1);
}Touch Interactions
tsx
import { useState } from 'react';
function SwipeableCard({ onSwipeLeft, onSwipeRight, children }) {
const [touchStart, setTouchStart] = useState<number | null>(null);
const [touchEnd, setTouchEnd] = useState<number | null>(null);
const minSwipeDistance = 50;
const onTouchStart = (e: React.TouchEvent) => {
setTouchEnd(null);
setTouchStart(e.targetTouches[0].clientX);
};
const onTouchMove = (e: React.TouchEvent) => {
setTouchEnd(e.targetTouches[0].clientX);
};
const onTouchEnd = () => {
if (!touchStart || !touchEnd) return;
const distance = touchStart - touchEnd;
const isLeftSwipe = distance > minSwipeDistance;
const isRightSwipe = distance < -minSwipeDistance;
if (isLeftSwipe) onSwipeLeft?.();
if (isRightSwipe) onSwipeRight?.();
};
return (
<div
onTouchStart={onTouchStart}
onTouchMove={onTouchMove}
onTouchEnd={onTouchEnd}
>
{children}
</div>
);
}Mobile Navigation
tsx
import { useState } from 'react';
function MobileNav() {
const [isOpen, setIsOpen] = useState(false);
return (
<>
{/* Hamburger button - visible on mobile */}
<button
className="md:hidden p-2"
onClick={() => setIsOpen(!isOpen)}
aria-expanded={isOpen}
aria-label="Toggle menu"
>
<span className={`hamburger ${isOpen ? 'open' : ''}`} />
</button>
{/* Mobile menu */}
<nav
className={`
fixed inset-0 bg-white z-50 transform transition-transform
${isOpen ? 'translate-x-0' : '-translate-x-full'}
md:static md:translate-x-0 md:bg-transparent
`}
>
<ul className="flex flex-col md:flex-row gap-4 p-4 md:p-0">
<li><a href="/">Home</a></li>
<li><a href="/about">About</a></li>
<li><a href="/contact">Contact</a></li>
</ul>
</nav>
{/* Backdrop */}
{isOpen && (
<div
className="fixed inset-0 bg-black/50 z-40 md:hidden"
onClick={() => setIsOpen(false)}
/>
)}
</>
);
}Safe Areas (Notch/Home Indicator)
css
/* Account for iPhone notch and home indicator */
.container {
padding-left: env(safe-area-inset-left);
padding-right: env(safe-area-inset-right);
padding-bottom: env(safe-area-inset-bottom);
}
/* Fixed bottom navigation */
.bottom-nav {
position: fixed;
bottom: 0;
left: 0;
right: 0;
padding-bottom: max(1rem, env(safe-area-inset-bottom));
}Viewport Meta Tag
html
<meta
name="viewport"
content="width=device-width, initial-scale=1, viewport-fit=cover"
/>useMediaQuery Hook
tsx
import { useState, useEffect } from 'react';
function useMediaQuery(query: string): boolean {
const [matches, setMatches] = useState(false);
useEffect(() => {
const media = window.matchMedia(query);
setMatches(media.matches);
const listener = (e: MediaQueryListEvent) => setMatches(e.matches);
media.addEventListener('change', listener);
return () => media.removeEventListener('change', listener);
}, [query]);
return matches;
}
// Usage
function Component() {
const isMobile = useMediaQuery('(max-width: 767px)');
const isTablet = useMediaQuery('(min-width: 768px) and (max-width: 1023px)');
const isDesktop = useMediaQuery('(min-width: 1024px)');
return isMobile ? <MobileView /> : <DesktopView />;
}Resources
- Responsive Design: https://web.dev/learn/design/
- Mobile-First CSS: https://developer.mozilla.org/en-US/docs/Learn/CSS/CSSlayout/ResponsiveDesign
- Viewport Units: https://developer.mozilla.org/en-US/docs/Web/CSS/length#viewport-percentage_lengths
