Styling and theming

InstantSearch.css provides a set of themes to style your search experiences with minimal effort. The themes are designed to be customizable through CSS variables (CSS custom properties), allowing you to match your brand identity while maintaining the core layout and features.

CSS variables are currently only supported for chat and autocomplete widgets.

Loading themes

InstantSearch.css includes two main themes:

satellite.css - A complete theme with modern styling
algolia.css - Algolia-branded theme

Both themes include reset.css, a minimal reset theme that provides base styles.

Use a CDN

The themes are available on jsDelivr:

HTML

<!-- Satellite theme -->
<link
  rel="stylesheet"
  href="https://cdn.jsdelivr.net/npm/instantsearch.css@8.5.1/themes/satellite-min.css"
  integrity="sha256-woeV7a4SRDsjDc395qjBJ4+ZhDdFn8AqswN1rlTO64E="
  crossorigin="anonymous"
/>

<!-- Or Algolia theme -->
<!-- <link
  rel="stylesheet"
  href="https://cdn.jsdelivr.net/npm/instantsearch.css@8.5.1/themes/algolia-min.css"
  integrity="sha256-uL8pCH+GkSJ+e7GN8p3sV0I450htMMjSlgJpp3gjwNQ="
  crossorigin="anonymous"
/> -->

Using npm

npm install instantsearch.css

yarn add instantsearch.css

Then import it in your project:

JavaScript

// Satellite theme
import 'instantsearch.css/themes/satellite.css';

// Or Algolia theme
// import 'instantsearch.css/themes/algolia.css';

Loading individual component styles

If you only need specific components, you can import their styles individually to reduce bundle size. This is currently available for chat and autocomplete components:

JavaScript

// Import only chat component styles
import 'instantsearch.css/components/chat.css';

// Or import the minified version
// import 'instantsearch.css/components/chat-min.css';

JavaScript

// Import only autocomplete component styles
import 'instantsearch.css/components/autocomplete.css';

// Or import the minified version
// import 'instantsearch.css/components/autocomplete-min.css';

Individual component styles include all CSS variables and theming capabilities of the full themes. You can still customize them using the same CSS variable overrides.

Development tools

InstantSearch.css provides developer tools that help you customize CSS variables visually in your browser. The developer tools display an interactive panel where you can:

Modify CSS variables in real-time
Toggle between theme modes (Auto, Light, Dark)
Export your customized variables to clipboard

Use the developer tools

Import the developer tools in your application:

JavaScript

import 'instantsearch.css/devtools/inject';

The developer tools panel will appear in the bottom-left corner of your browser, allowing you to interactively customize colors, spacing, typography, and more.

The developer tools are intended for development only. Don’t include them in your production build.

Programmatic usage

You can also create the developer tools programmatically with custom options:

JavaScript

import { createInstantSearchDevtools } from 'instantsearch.css/devtools';

createInstantSearchDevtools({
  // Optional: custom container
  container: document.getElementById('devtools'),

  // Optional: custom styling
  style: {
    position: 'fixed',
    top: '1rem',
    right: '1rem',
    zIndex: '1000',
  },
});

Customization example

You can override any CSS variable to match your brand:

CSS

:root {
  /* Brand colors */
  --ais-primary-color-rgb: 124, 58, 237;

  /* Spacing */
  --ais-spacing-factor: 1.5;
}

Dark mode

The themes support dark mode in two ways:

Using data-theme attribute

HTML

<html data-theme="dark">
  <!-- Your content -->
</html>

Using CSS class

HTML

<body class="dark">
  <!-- Your content -->
</body>

Both approaches automatically adjust the following variables:

CSS

:root[data-theme='dark'],
.dark {
  /* Text colors */
  --ais-text-color-rgb: 255, 255, 255;
  --ais-primary-color-rgb: 110, 160, 255;
  --ais-muted-color-rgb: 190, 190, 190;
  --ais-button-text-color-rgb: 255, 255, 255;

  /* Border color */
  --ais-border-color-rgb: 100, 100, 100;

  /* Background color */
  --ais-background-color-rgb: 38, 38, 38;

  /* Shadow color */
  --ais-shadow-color-rgb: 0, 0, 0;
}

Custom dark mode colors

You can override dark mode colors:

CSS

:root[data-theme='dark'],
.dark {
  --ais-primary-color-rgb: 147, 197, 253;
  --ais-background-color-rgb: 15, 23, 42;
}

Complete variable reference

For a complete list of all available CSS variables with detailed descriptions, see the tables below:

Text colors

Variable	Default	Description
`--ais-text-color-rgb`	`38, 38, 38`	RGB values for the base text color
`--ais-text-color-alpha`	`1`	Alpha value for the base text color
`--ais-primary-color-rgb`	`30, 89, 255`	RGB values for the accent color
`--ais-primary-color-alpha`	`1`	Alpha value for the accent color
`--ais-muted-color-rgb`	`82, 82, 82`	RGB values for muted/secondary text
`--ais-muted-color-alpha`	`1`	Alpha value for muted/secondary text
`--ais-button-text-color-rgb`	`255, 255, 255`	RGB values for button text
`--ais-button-text-color-alpha`	`1`	Alpha value for button text

Border, background, and shadow colors

Variable	Default	Description
`--ais-border-color-rgb`	`150, 150, 150`	RGB values for borders
`--ais-border-color-alpha`	`1`	Alpha value for borders
`--ais-background-color-rgb`	`255, 255, 255`	RGB values for backgrounds
`--ais-background-color-alpha`	`1`	Alpha value for backgrounds
`--ais-shadow-color-rgb`	`23, 23, 23`	RGB values for shadow colors

Spacing

Variable	Default	Description
`--ais-base-unit`	`16`	Base unit value to calculate font sizes and spacing
`--ais-spacing-factor`	`1` (tap: `1.2`)	Multiplier for spacing calculations
`--ais-spacing`	calculated	Computed spacing value

Typography

Variable	Default	Description
`--ais-font-size`	`16px`	Base font size derived from `--ais-base-unit`
`--ais-font-weight-medium`	`500`	Medium font weight
`--ais-font-weight-semibold`	`600`	Semibold font weight
`--ais-font-weight-bold`	`700`	Bold font weight

Icons

Variable	Default	Description
`--ais-icon-size`	`20px`	Icon size
`--ais-icon-stroke-width`	`1.6`	Icon stroke width

Shadows

Variable	Default	Description
`--ais-shadow-sm`	`0px 0px 0px 1px rgba(..., 0.05), 0px 1px 3px 0px rgba(..., 0.25)`	Small shadow for subtle depth
`--ais-shadow-md`	`0px 0px 0px 1px rgba(..., 0.05), 0px 4px 8px -2px rgba(..., 0.25)`	Medium shadow for cards
`--ais-shadow-lg`	`0 0 0 1px rgba(..., 0.05), 0 6px 16px -4px rgba(..., 0.15)`	Large shadow for modals

Border radius

Variable	Default	Description
`--ais-border-radius-sm`	`4px`	Small border radius
`--ais-border-radius-md`	`8px`	Medium border radius
`--ais-border-radius-lg`	`16px`	Large border radius
`--ais-border-radius-full`	`9999px`	Full border radius for pills

Transitions

Variable	Default	Description
`--ais-transition-duration`	`0.3s`	Duration for transitions
`--ais-transition-timing-function`	`cubic-bezier(0.4, 0, 0.2, 1)`	Timing function for transitions

Z-index

Variable	Default	Description
`--ais-z-index-chat`	`9999`	Z-index for chat component
`--ais-z-index-autocomplete`	`10000`	Z-index for autocomplete component

Component-specific

Chat component

Variable	Default	Description
`--ais-chat-width`	`22.5rem`	Default width of chat panel
`--ais-chat-height`	`70%`	Default height of chat panel
`--ais-chat-maximized-width`	`70%`	Width when maximized
`--ais-chat-maximized-height`	`100%`	Height when maximized
`--ais-chat-margin`	`1.5rem`	Margin around chat panel
`--ais-chat-carousel-item-width`	`calc(var(--ais-spacing) * 10)`	Width of carousel items

Autocomplete component

Variable	Default	Description
`--ais-autocomplete-search-input-height`	`44px`	Height of search input
`--ais-autocomplete-panel-max-height`	`650px`	Maximum height of autocomplete panel

Search and Discovery platform

Optimization and Personalization

AI-powered experiences

Production and scale

Styling and theming

Loading themes

Use a CDN

Using npm

Loading individual component styles

Development tools

Use the developer tools

Programmatic usage

Customization example

Dark mode

Using data-theme attribute

Using CSS class

Custom dark mode colors

Complete variable reference

Text colors

Border, background, and shadow colors

Spacing

Typography

Icons

Shadows

Border radius

Transitions

Z-index

Component-specific

Chat component

Autocomplete component

​Loading themes

​Use a CDN

​Using npm

​Loading individual component styles

​Development tools

​Use the developer tools

​Programmatic usage

​Customization example

​Dark mode

​Using data-theme attribute

​Using CSS class

​Custom dark mode colors

​Complete variable reference

​Text colors

​Border, background, and shadow colors

​Spacing

​Typography

​Icons

​Shadows

​Border radius

​Transitions

​Z-index

​Component-specific

​Chat component

​Autocomplete component

Loading themes

Use a CDN

Using npm

Loading individual component styles

Development tools

Use the developer tools

Programmatic usage

Customization example

Dark mode

Using data-theme attribute

Using CSS class

Custom dark mode colors

Complete variable reference

Text colors

Border, background, and shadow colors

Spacing

Typography

Icons

Shadows

Border radius

Transitions

Z-index

Component-specific

Chat component

Autocomplete component