Fully namespaced Tailwind config for widget or embeddable component

README.md

Sometimes you need to publish a CSS file for 3rd-party consumption (i.e. default styles for an embeddable JS widget). This set up lets you continue to use Tailwind, but scope all your styles to a specific selector.

Simply replace .internachi with your own widget namespace, set up Tailwind as you please, and run generate.sh to build a custom version of your Tailwind styles that won't interfere with other CSS rules (including the Tailwind reset).

generate.sh

#!/usr/bin/env bash

npx tailwindcss@3 --minify --jit -i ./widget.css -o ./widget.dist.css -c ./tailwind.config.js 

tailwind.config.js

module.exports = {
	important: '.internachi',
	content: ['<enter content paths here>'],
	theme: {
		extend: {},
	},
	plugins: [],
};

widget.css

/*! tailwindcss v2.2.19 | MIT License | https://tailwindcss.com */

/*! modern-normalize v1.1.0 | MIT License | https://github.com/sindresorhus/modern-normalize */

/*
Document
========
*/

/**
Use a better box model (opinionated).
*/

.internachi *,
.internachi ::before,
.internachi ::after {
	box-sizing: border-box;
}

/**
Use a more readable tab size (opinionated).
*/

.internachi {
	tab-size: 4;
}

/**
1. Correct the line height in all browsers.
2. Prevent adjustments of font size after orientation changes in iOS.
*/

.internachi {
	line-height: 1.15;
	/* 1 */
	-webkit-text-size-adjust: 100%;
	/* 2 */
}

/*
Sections
========
*/

/**
Remove the margin in all browsers.
*/

.internachi {
	margin: 0;
}

/**
Improve consistency of default fonts in all browsers. (https://github.com/sindresorhus/modern-normalize/issues/3)
*/

.internachi {
	font-family: system-ui,
	-apple-system, /* Firefox supports this but not yet `system-ui` */ 'Segoe UI',
	Roboto,
	Helvetica,
	Arial,
	sans-serif,
	'Apple Color Emoji',
	'Segoe UI Emoji';
}

/*
Grouping content
================
*/

/**
1. Add the correct height in Firefox.
2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
*/

.internachi hr {
	height: 0;
	/* 1 */
	color: inherit;
	/* 2 */
}

/*
Text-level semantics
====================
*/

/**
Add the correct text decoration in Chrome, Edge, and Safari.
*/

.internachi abbr[title] {
	-webkit-text-decoration: underline dotted;
	text-decoration: underline dotted;
}

/**
Add the correct font weight in Edge and Safari.
*/

.internachi b,
.internachi strong {
	font-weight: bolder;
}

/**
1. Improve consistency of default fonts in all browsers. (https://github.com/sindresorhus/modern-normalize/issues/3)
2. Correct the odd 'em' font sizing in all browsers.
*/

.internachi code,
.internachi kbd,
.internachi samp,
.internachi pre {
	font-family: ui-monospace,
	SFMono-Regular,
	Consolas,
	'Liberation Mono',
	Menlo,
	monospace;
	/* 1 */
	font-size: 1em;
	/* 2 */
}

/**
Add the correct font size in all browsers.
*/

.internachi small {
	font-size: 80%;
}

/**
Prevent 'sub' and 'sup' elements from affecting the line height in all browsers.
*/

.internachi sub,
.internachi sup {
	font-size: 75%;
	line-height: 0;
	position: relative;
	vertical-align: baseline;
}

.internachi sub {
	bottom: -0.25em;
}

.internachi sup {
	top: -0.5em;
}

/*
Tabular data
============
*/

/**
1. Remove text indentation from table contents in Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=999088, https://bugs.webkit.org/show_bug.cgi?id=201297)
2. Correct table border color inheritance in all Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=935729, https://bugs.webkit.org/show_bug.cgi?id=195016)
*/

.internachi table {
	text-indent: 0;
	/* 1 */
	border-color: inherit;
	/* 2 */
}

/*
Forms
=====
*/

/**
1. Change the font styles in all browsers.
2. Remove the margin in Firefox and Safari.
*/

.internachi button,
.internachi input,
.internachi optgroup,
.internachi select,
.internachi textarea {
	font-family: inherit;
	/* 1 */
	font-size: 100%;
	/* 1 */
	line-height: 1.15;
	/* 1 */
	margin: 0;
	/* 2 */
}

/**
Remove the inheritance of text transform in Edge and Firefox.
1. Remove the inheritance of text transform in Firefox.
*/

.internachi button,
.internachi select {
	/* 1 */
	text-transform: none;
}

/**
Correct the inability to style clickable types in iOS and Safari.
*/

.internachi button,
.internachi [type='button'],
.internachi [type='reset'],
.internachi [type='submit'] {
	-webkit-appearance: button;
}

/**
Remove the inner border and padding in Firefox.
*/

.internachi ::-moz-focus-inner {
	border-style: none;
	padding: 0;
}

/**
Restore the focus styles unset by the previous rule.
*/

.internachi :-moz-focusring {
	outline: 1px dotted ButtonText;
}

/**
Remove the additional ':invalid' styles in Firefox.
See: https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737
*/

.internachi :-moz-ui-invalid {
	box-shadow: none;
}

/**
Remove the padding so developers are not caught out when they zero out 'fieldset' elements in all browsers.
*/

.internachi legend {
	padding: 0;
}

/**
Add the correct vertical alignment in Chrome and Firefox.
*/

.internachi progress {
	vertical-align: baseline;
}

/**
Correct the cursor style of increment and decrement buttons in Safari.
*/

.internachi ::-webkit-inner-spin-button,
.internachi ::-webkit-outer-spin-button {
	height: auto;
}

/**
1. Correct the odd appearance in Chrome and Safari.
2. Correct the outline style in Safari.
*/

.internachi [type='search'] {
	-webkit-appearance: textfield;
	/* 1 */
	outline-offset: -2px;
	/* 2 */
}

/**
Remove the inner padding in Chrome and Safari on macOS.
*/

.internachi ::-webkit-search-decoration {
	-webkit-appearance: none;
}

/**
1. Correct the inability to style clickable types in iOS and Safari.
2. Change font properties to 'inherit' in Safari.
*/

.internachi ::-webkit-file-upload-button {
	-webkit-appearance: button;
	/* 1 */
	font: inherit;
	/* 2 */
}

/*
Interactive
===========
*/

/*
Add the correct display in Chrome and Safari.
*/

.internachi summary {
	display: list-item;
}

/**
 * Manually forked from SUIT CSS Base: https://github.com/suitcss/base
 * A thin layer on top of normalize.css that provides a starting point more
 * suitable for web applications.
 */

/**
 * Removes the default spacing and border for appropriate elements.
 */

.internachi blockquote,
.internachi dl,
.internachi dd,
.internachi h1,
.internachi h2,
.internachi h3,
.internachi h4,
.internachi h5,
.internachi h6,
.internachi hr,
.internachi figure,
.internachi p,
.internachi pre {
	margin: 0;
}

.internachi button {
	background-color: transparent;
	background-image: none;
}

.internachi fieldset {
	margin: 0;
	padding: 0;
}

.internachi ol,
.internachi ul {
	list-style: none;
	margin: 0;
	padding: 0;
}

/**
 * Tailwind custom reset styles
 */

/**
 * 1. Use the user's configured `sans` font-family (with Tailwind's default
 *    sans-serif font stack as a fallback) as a sane default.
 * 2. Use Tailwind's default "normal" line-height so the user isn't forced
 *    to override it to ensure consistency even when using the default theme.
 */

.internachi {
	font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
	/* 1 */
	line-height: 1.5;
	/* 2 */
}

/**
 * Inherit font-family and line-height from `html` so users can set them as
 * a class directly on the `html` element.
 */

.internachi {
	font-family: inherit;
	line-height: inherit;
}

/**
 * 1. Prevent padding and border from affecting element width.
 *
 *    We used to set this in the html element and inherit from
 *    the parent element for everything else. This caused issues
 *    in shadow-dom-enhanced elements like <details> where the content
 *    is wrapped by a div with box-sizing set to `content-box`.
 *
 *    https://github.com/mozdevs/cssremedy/issues/4
 *
 *
 * 2. Allow adding a border to an element by just adding a border-width.
 *
 *    By default, the way the browser specifies that an element should have no
 *    border is by setting it's border-style to `none` in the user-agent
 *    stylesheet.
 *
 *    In order to easily add borders to elements by just setting the `border-width`
 *    property, we change the default border-style for all elements to `solid`, and
 *    use border-width to hide them instead. This way our `border` utilities only
 *    need to set the `border-width` property instead of the entire `border`
 *    shorthand, making our border utilities much more straightforward to compose.
 *
 *    https://github.com/tailwindcss/tailwindcss/pull/116
 */

.internachi *,
.internachi ::before,
.internachi ::after {
	box-sizing: border-box;
	/* 1 */
	border-width: 0;
	/* 2 */
	border-style: solid;
	/* 2 */
	border-color: currentColor;
	/* 2 */
}

/*
 * Ensure horizontal rules are visible by default
 */

.internachi hr {
	border-top-width: 1px;
}

/**
 * Undo the `border-style: none` reset that Normalize applies to images so that
 * our `border-{width}` utilities have the expected effect.
 *
 * The Normalize reset is unnecessary for us since we default the border-width
 * to 0 on all elements.
 *
 * https://github.com/tailwindcss/tailwindcss/issues/362
 */

.internachi img {
	border-style: solid;
}

.internachi textarea {
	resize: vertical;
}

.internachi input::placeholder,
.internachi textarea::placeholder {
	opacity: 1;
	color: #9ca3af;
}

.internachi button,
.internachi [role="button"] {
	cursor: pointer;
}

/**
 * Override legacy focus reset from Normalize with modern Firefox focus styles.
 *
 * This is actually an improvement over the new defaults in Firefox in our testing,
 * as it triggers the better focus styles even for links, which still use a dotted
 * outline in Firefox by default.
 */

.internachi :-moz-focusring {
	outline: auto;
}

.internachi table {
	border-collapse: collapse;
}

.internachi h1,
.internachi h2,
.internachi h3,
.internachi h4,
.internachi h5,
.internachi h6 {
	font-size: inherit;
	font-weight: inherit;
}

/**
 * Reset links to optimize for opt-in styling instead of
 * opt-out.
 */

.internachi a {
	color: inherit;
	text-decoration: inherit;
}

/**
 * Reset form element properties that are easy to forget to
 * style explicitly so you don't inadvertently introduce
 * styles that deviate from your design system. These styles
 * supplement a partial reset that is already applied by
 * normalize.css.
 */

.internachi button,
.internachi input,
.internachi optgroup,
.internachi select,
.internachi textarea {
	padding: 0;
	line-height: inherit;
	color: inherit;
}

/**
 * Use the configured 'mono' font family for elements that
 * are expected to be rendered with a monospace font, falling
 * back to the system monospace stack if there is no configured
 * 'mono' font family.
 */

.internachi pre,
.internachi code,
.internachi kbd,
.internachi samp {
	font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/**
 * 1. Make replaced elements `display: block` by default as that's
 *    the behavior you want almost all of the time. Inspired by
 *    CSS Remedy, with `svg` added as well.
 *
 *    https://github.com/mozdevs/cssremedy/issues/14
 * 
 * 2. Add `vertical-align: middle` to align replaced elements more
 *    sensibly by default when overriding `display` by adding a
 *    utility like `inline`.
 *
 *    This can trigger a poorly considered linting error in some
 *    tools but is included by design.
 * 
 *    https://github.com/jensimmons/cssremedy/issues/14#issuecomment-634934210
 */

.internachi img,
.internachi svg,
.internachi video,
.internachi canvas,
.internachi audio,
.internachi iframe,
.internachi embed,
.internachi object {
	display: block;
	/* 1 */
	vertical-align: middle;
	/* 2 */
}

/**
 * Constrain images and videos to the parent width and preserve
 * their intrinsic aspect ratio.
 *
 * https://github.com/mozdevs/cssremedy/issues/14
 */

.internachi img,
.internachi video {
	max-width: 100%;
	height: auto;
}

/**
 * Ensure the default browser behavior of the `hidden` attribute.
 */

.internachi [hidden] {
	display: none;
}

@tailwind components;
@tailwind utilities