React shopping cart page template
A React cart page: editable line items beside an order summary with a discount code, a free-shipping progress bar and an empty state.
Install
One command writes the page, its design and its 2 sections into your project, as code you then own. It needs a
components.json, and the shadcn registry page has the one-time setup.Terminal
npx shadcn@latest add https://www.box-kite.dev/r/shopping-cart.jsonSections
Each section is a block of its own, with its own page and its own install command.
Source
The page itself. Every style is a prop, so there is no stylesheet to copy with it, and each section it imports is on its own page above.
box-kite/store/cart-page.tsx
JSX
'use client';
import Box from '@box-kite/react';
import Flex from '@box-kite/react/components/flex';
import Grid from '@box-kite/react/components/grid';
import { H1, Link, P } from '@box-kite/react/components/semantics';
import { useState } from 'react';
import CartItems from './cart-items';
import OrderSummary from './order-summary';
import ProductArt from './product-art';
import { type CartLine, countOf, sampleCart } from './store-data';
import { card, heading, useStoreLinks } from './store-design';
import StoreShell from './store-shell';
const muted = { color: 'stone-600', theme: { dark: { color: 'stone-400' } } } as const;
/** The cart: its lines beside the summary, both reading one list, and an empty state once it is cleared. */
export default function CartPage({ theme }: { theme?: string }) {
const links = useStoreLinks();
const [lines, setLines] = useState<CartLine[]>([...sampleCart]);
const count = countOf(lines);
return (
<StoreShell cartCount={count} theme={theme}>
<Flex jc="space-between" ai="baseline" gap={4} flexWrap="wrap" mb={8}>
<H1 fontSize={40} lineHeight={46} {...heading} letterSpacing={-1}>
Your cart
</H1>
<Link
props={{ href: `${links.shop}#collection` }}
fontSize={15}
color="stone-900"
css={{ textUnderlineOffset: '6px' }}
hover={{ color: 'stone-500' }}
theme={{ dark: { color: 'stone-100', hover: { color: 'stone-400' } } }}
>
Continue shopping
</Link>
</Flex>
{lines.length ? (
<Grid gridTemplateColumns={1} lg={{ css: { gridTemplateColumns: 'minmax(0, 1fr) 24rem' } }} gap={10} ai="start">
<Box>
<P mb={4} fontSize={15} {...muted}>
{count} {count === 1 ? 'object' : 'objects'}, each finished by hand — so the colour of yours may differ a little from the
pictures.
</P>
<CartItems lines={lines} onLinesChange={setLines} />
</Box>
<OrderSummary
lines={lines}
action={
<Link component="button" props={{ href: links.checkout }} width="fit" py={3.5} textDecoration="none">
Checkout
</Link>
}
/>
</Grid>
) : (
<Flex d="column" ai="center" textAlign="center" gap={3} py={16} {...card}>
<Box width={32} height={32}>
<ProductArt shape="vase" finish="chalk" radius={4} />
</Box>
<P fontSize={20} {...heading}>
Your cart is empty.
</P>
<P fontSize={15} {...muted}>
An empty vase is still a vase. A cart is less forgiving.
</P>
<Link component="button" props={{ href: `${links.shop}#collection` }} mt={3} textDecoration="none">
Browse the collection
</Link>
</Flex>
)}
</StoreShell>
);
}
Design
What every page of this template shares: the built-in components restyled with
Box.createComponents(), applied to the subtree with <Box.Components>, so it stops at the edge of the store and the rest of your app keeps its own look.Store design
box-kite/store/store-design.tsx
JSX
'use client';
import Box from '@box-kite/react';
import { createContext, type ReactNode, useContext } from 'react';
/**
* The store's design: the built-in components restyled for this one brand, in light and dark. It registers
* nothing — `Box.createComponents()` returns a design, and `StoreSurface` applies it to its subtree only, so
* the store can sit inside an app that looks like something else.
*/
export const storeDesign = Box.createComponents({
// Square, solid and one colour: the only filled shape on a page of hairlines, so the action is never in doubt.
button: {
styles: {
bgColor: 'stone-900',
color: 'white',
borderRadius: 999,
px: 6,
fontWeight: 500,
transition: 'colors',
hover: { bgColor: 'stone-700' },
active: { bgColor: 'stone-800' },
focus: { outlineColor: 'stone-400' },
disabled: { bgColor: 'stone-200', color: 'stone-500', hover: { bgColor: 'stone-200' } },
theme: {
dark: {
bgColor: 'stone-100',
color: 'stone-950',
hover: { bgColor: 'white' },
active: { bgColor: 'stone-200' },
focus: { outlineColor: 'stone-500' },
disabled: { bgColor: 'stone-800', color: 'stone-500', hover: { bgColor: 'stone-800' } },
},
},
},
variants: {
secondary: {
bgColor: 'transparent',
color: 'stone-900',
b: 1,
borderColor: 'stone-300',
hover: { bgColor: 'transparent', borderColor: 'stone-900' },
active: { bgColor: 'stone-100' },
focus: { borderColor: 'stone-900', outlineColor: 'stone-300' },
theme: {
dark: {
bgColor: 'transparent',
color: 'stone-100',
borderColor: 'stone-700',
hover: { bgColor: 'transparent', borderColor: 'stone-200' },
active: { bgColor: 'stone-900' },
focus: { borderColor: 'stone-300', outlineColor: 'stone-600' },
},
},
},
ghost: {
bgColor: 'transparent',
color: 'stone-700',
hover: { bgColor: 'stone-900/5' },
active: { bgColor: 'stone-900/10' },
disabled: { bgColor: 'transparent', color: 'stone-400' },
theme: {
dark: {
bgColor: 'transparent',
color: 'stone-300',
hover: { bgColor: 'white/10' },
active: { bgColor: 'white/15' },
disabled: { bgColor: 'transparent', color: 'stone-600' },
},
},
},
},
},
textbox: {
styles: {
width: 'fit',
borderRadius: 2.5,
borderColor: 'stone-300',
bgColor: 'white',
color: 'stone-900',
hover: { borderColor: 'stone-500' },
focus: { borderColor: 'stone-900', outlineColor: 'stone-200' },
ariaAttr: { invalid: { borderColor: 'red-700', focus: { outlineColor: 'red-200' } } },
theme: {
dark: {
bgColor: 'stone-950',
color: 'stone-100',
borderColor: 'stone-700',
hover: { borderColor: 'stone-500' },
focus: { borderColor: 'stone-200', outlineColor: 'stone-800' },
ariaAttr: { invalid: { borderColor: 'red-400', focus: { outlineColor: 'red-900' } } },
},
},
},
},
checkbox: {
styles: {
borderRadius: 1,
borderColor: 'stone-400',
outlineColor: 'stone-300',
hover: { borderColor: 'stone-900' },
checked: { bgColor: 'stone-900', borderColor: 'stone-900' },
theme: {
dark: {
borderColor: 'stone-500',
outlineColor: 'stone-700',
hover: { borderColor: 'stone-200' },
checked: { bgColor: 'stone-600', borderColor: 'stone-200' },
},
},
},
},
radioButton: {
styles: {
borderColor: 'stone-400',
outlineColor: 'stone-300',
hover: { borderColor: 'stone-900' },
checked: { bgColor: 'stone-900', borderColor: 'stone-900' },
theme: {
dark: {
borderColor: 'stone-500',
outlineColor: 'stone-700',
hover: { borderColor: 'stone-200' },
checked: { bgColor: 'stone-600', borderColor: 'stone-200' },
},
},
},
},
// The caption over a row of options rather than beside it: the row wraps, and the caption takes the first line whole.
radioGroup: {
variants: { horizontal: { flexWrap: 'wrap' } },
children: {
label: { styles: { width: 'fit', fontSize: 14, fontWeight: 500, color: 'stone-900', theme: { dark: { color: 'stone-100' } } } },
},
},
dropdown: {
styles: {
width: 'fit',
borderRadius: 2.5,
borderColor: 'stone-300',
bgColor: 'white',
color: 'stone-900',
hover: { borderColor: 'stone-500' },
focus: { borderColor: 'stone-900', outlineColor: 'stone-200' },
theme: {
dark: {
bgColor: 'stone-950',
color: 'stone-100',
borderColor: 'stone-700',
hover: { borderColor: 'stone-500' },
focus: { borderColor: 'stone-200', outlineColor: 'stone-800' },
},
},
},
children: {
items: {
styles: {
borderRadius: 3,
borderColor: 'stone-200',
color: 'stone-900',
theme: { dark: { bgColor: 'stone-950', borderColor: 'stone-800', color: 'stone-100' } },
},
},
item: {
styles: {
borderRadius: 2,
hover: { bgColor: 'stone-100' },
focus: { bgColor: 'stone-100' },
selected: { bgColor: 'stone-100', hover: { bgColor: 'stone-200' } },
theme: {
dark: {
hover: { bgColor: 'stone-900' },
focus: { bgColor: 'stone-900' },
selected: { bgColor: 'stone-900', hover: { bgColor: 'stone-800' } },
},
},
},
variants: { highlighted: { outlineColor: 'stone-900', theme: { dark: { outlineColor: 'stone-200' } } } },
},
},
},
progress: {
styles: { height: 0.5, borderRadius: 999, bgColor: 'stone-200', theme: { dark: { bgColor: 'stone-800' } } },
children: {
fill: { styles: { borderRadius: 999, bgColor: 'stone-900', theme: { dark: { bgColor: 'stone-100' } } } },
},
},
accordion: {
children: {
item: { styles: { borderColor: 'stone-200', theme: { dark: { borderColor: 'stone-800' } } } },
trigger: {
styles: {
py: 4,
fontSize: 15,
fontWeight: 500,
color: 'stone-900',
hover: { color: 'stone-500' },
ariaAttr: { expanded: { color: 'stone-900' } },
focusVisible: { outlineColor: 'stone-900' },
theme: { dark: { color: 'stone-100', hover: { color: 'stone-400' }, ariaAttr: { expanded: { color: 'stone-100' } } } },
},
},
panel: { styles: { fontSize: 15, lineHeight: 24, color: 'stone-600', theme: { dark: { color: 'stone-400' } } } },
},
},
tabs: {
children: {
tab: { styles: { focusVisible: { outlineColor: 'stone-900' } } },
panel: { styles: { focusVisible: { outlineColor: 'stone-900' } } },
},
},
});
/** Spread on a heading: a medium weight and tight tracking, in whatever sans the system already has. */
export const heading = { fontWeight: 500, letterSpacing: -0.5 } as const;
/** The small spaced capitals over a section, beside a badge or under a price. */
export const eyebrow = { fontSize: 12, fontWeight: 500, letterSpacing: 1.5, textTransform: 'uppercase' } as const;
/** A panel on the page: a hairline and soft corners, nothing else. */
export const card = { b: 1, borderRadius: 4, borderColor: 'stone-200', theme: { dark: { borderColor: 'stone-800' } } } as const;
/** Secondary text, in both themes. */
export const muted = { color: 'stone-500', theme: { dark: { color: 'stone-400' } } } as const;
/**
* Where the pages and blocks link to. A provider rather than constants, so the same pages work under any
* router: wrap them in `<StoreLinks.Provider value={…}>` with your own routes.
*/
export interface StoreRoutes {
shop: string;
product: (slug: string) => string;
cart: string;
checkout: string;
}
export const StoreLinks = createContext<StoreRoutes>({
shop: '/',
product: (slug) => `/products/${slug}`,
cart: '/cart',
checkout: '/checkout',
});
export const useStoreLinks = () => useContext(StoreLinks);
/** The design and the page colours, with no theme of its own: it follows whatever theme is around it. */
export function StoreSurface({ children }: { children: ReactNode }) {
return (
<Box.Components value={storeDesign}>
<Box bgColor="white" color="stone-900" theme={{ dark: { bgColor: 'stone-950', color: 'stone-100' } }}>
{children}
</Box>
</Box.Components>
);
}
/**
* A whole store page: its own light/dark switch, remembered under its own key, around `StoreSurface`.
* Without `theme` it opens in the reader's saved choice, then their system's.
*/
export function StoreTheme({ theme, children }: { theme?: string; children: ReactNode }) {
return (
<Box.Theme theme={theme} storageKey="still-theme">
<StoreSurface>
<Box minHeight="fit-screen">{children}</Box>
</StoreSurface>
</Box.Theme>
);
}
The command installs the rest of it beside that file —
store-data.ts, product-art.tsx, quantity-stepper.tsx, form-field.tsx, store-shell.tsx — and the repository has every file.