What is sanitize.css

What is sanitize.css

normalize.css and sanitize.css is a CSS library that provides consistent, cross-browser default styling of HTML elements alongside useful defaults.

sanitize.css is a CSS library that provides consistent, cross-browser default styling of HTML elements alongside useful defaults.

It is developed alongside normalize.css, which means every normalization is included, and every normalization and opinion are clearly marked and documented.

Usage

<link href="https://unpkg.com/sanitize.css" rel="stylesheet" />

Or to exclusively support evergreen browsers.

<link href="https://unpkg.com/sanitize.css/evergreen.css" rel="stylesheet" />

Learn more about sanitize.css.

Forms CSS

A separate stylesheet that normalizes form controls without side effects.

<link href="https://unpkg.com/sanitize.css/forms.css" rel="stylesheet" />

Or to exclusively support evergreen browsers.

<link href="https://unpkg.com/sanitize.css/forms.evergreen.css" rel="stylesheet" />

Learn more about forms.css.

Assets CSS

A separate stylesheet that applies a comfortable measure to plain documents.

<link href="https://unpkg.com/sanitize.css/assets.css" rel="stylesheet" />

Learn more about assets.css.

Typography CSS

A separate stylesheet that normalizes typography using system interface fonts.

<link href="https://unpkg.com/sanitize.css/typography.css" rel="stylesheet" />

Learn more about typography.css.

Reduce Motion CSS

A separate stylesheet for restricting motion when the user has requested this at system level.

<link href="https://unpkg.com/sanitize.css/reduce-motion.css" rel="stylesheet" />

Learn more about reduce-motion.css.

Page CSS

A separate stylesheet that applies a comfortable measure to plain documents.

<link href="https://unpkg.com/sanitize.css/page.css" rel="stylesheet" />

Install

npm install sanitize.css --save

Webpack Usage

Import [sanitize.css] in CSS:

@import '~sanitize.css';
@import '~sanitize.css/forms.css';
@import '~sanitize.css/typography.css';

Alternatively, import [sanitize.css] in JS:

import 'sanitize.css';
import 'sanitize.css/forms.css';
import 'sanitize.css/typography.css';

In webpack.config.js, be sure to use the appropriate loaders:

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [ 'style-loader', 'css-loader' ]
      }
    ]
  }
}

Download

See https://csstools.github.io/sanitize.css/latest/sanitize.css

What does it do?

  • Normalizes styles for a wide range of elements.
  • Corrects bugs and common browser inconsistencies.
  • Provides common, useful defaults.
  • Explains what code does using detailed comments.

Browser support

  • Chrome (last 3)
  • Edge (last 3)
  • Firefox (last 3)
  • Firefox ESR
  • Opera (last 3)
  • Safari (last 3)
  • iOS Safari (last 2)
  • Internet Explorer 9+

Differences

[normalize.css] and [sanitize.css] correct browser bugs while carefully testing and documenting changes. normalize.css styles adhere to css specifications. sanitize.css styles adhere to common developer expectations and preferences. [reset.css] unstyles all elements. Both sanitize.css and normalize.css are maintained in sync.

Features

Box sizing defaults to border-box
*, ::before, ::after {
  box-sizing: border-box;
}
Backgrounds do not repeat by default
*, ::before, ::after {
  background-repeat: no-repeat;
}
Pseudo-elements inherit text decoration and vertical alignment
::before,
::after {
  text-decoration: inherit;
  vertical-align: inherit;
}
Cursors only change to hint non-obvious interfaces
html {
  cursor: default;
}
Text has a comfortable line height in all browsers
html {
  line-height: 1.5;
}
Tabs appear the same on the web as in a typical editor
html {
  tab-size: 4;
}
Words break to prevent overflow
html {
  word-break: break-all;
}
Documents do not use a margin for outer padding
body {
  margin: 0;
}
nav ol, nav ul {
  list-style: none;
  padding: 0;
}
Media elements align to the text center of other content
audio, canvas, iframe, img, svg, video {
  vertical-align: middle;
}
SVGs fallback to the current text color
svg:not([fill]) {
  fill: currentColor;
}
Tables do not include additional border spacing
table {
  border-collapse: collapse;
}
Textareas only resize vertically by default
textarea {
  resize: vertical;
}
Single taps are dispatched immediately on clickable elements
a, area, button, input, label, select, summary, textarea, [tabindex] {
  -ms-touch-action: manipulation;
  touch-action: manipulation;
}
ARIA roles include visual cursor hints
[aria-busy="true"] {
  cursor: progress;
}

[aria-controls] {
  cursor: pointer;
}

[aria-disabled="true"], [disabled] {
  cursor: default;
}
Visually hidden content remains accessible
[aria-hidden="false"][hidden] {
  display: initial;
}

[aria-hidden="false"][hidden]:not(:focus) {
  clip: rect(0, 0, 0, 0);
  position: absolute;
}

Forms

[sanitize.css] includes a separate stylesheet for normalizing forms using minimal, standards-like styling.

<link href="https://unpkg.com/sanitize.css" rel="stylesheet" />
<link href="https://unpkg.com/sanitize.css/forms.css" rel="stylesheet" />

Forms Features

Form controls appear visually consistent and restyle consistently
button, input, select, textarea {
  background-color: transparent;
  border: 1px solid WindowFrame;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  padding: 0.25em 0.375em;
}

[type="color"],
[type="range"] {
  border-width: 0;
  padding: 0;
}
Expandable select controls appear visually consistent
select {
  -moz-appearance: none;
  -webkit-appearance: none;
  background: no-repeat right center / 1em;
  border-radius: 0;
  padding-right: 1em;
}

select:not([multiple]):not([size]) {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='4'%3E%3Cpath d='M4 0h6L7 4'/%3E%3C/svg%3E");
}

::-ms-expand {
  display: none;
}
Placeholders appear visually consistent in Internet Explorer
:-ms-input-placeholder {
  color: rgba(0, 0, 0, 0.54);
}

Assets

[sanitize.css] includes a separate stylesheet for normalizing restricting the size of assets in all browsers.

<link href="https://unpkg.com/sanitize.css" rel="stylesheet" />
<link href="https://unpkg.com/sanitize.css/assets.css" rel="stylesheet" />

Assets Features

Assets use a comfortable measure in all browsers
iframe,
img,
input,
select,
textarea {
  height: auto;
  max-width: 100%;
}

Typography

[sanitize.css] includes a separate stylesheet for normalizing typography using system interface fonts.

<link href="https://unpkg.com/sanitize.css" rel="stylesheet" />
<link href="https://unpkg.com/sanitize.css/typography.css" rel="stylesheet" />

Typography Features

Typography uses the default system font
html {
  font-family:
    system-ui,
    /* macOS 10.11-10.12 */ -apple-system,
    /* Windows 6+ */ Segoe UI,
    /* Android 4+ */ Roboto,
    /* Ubuntu 10.10+ */ Ubuntu,
    /* Gnome 3+ */ Cantarell,
    /* KDE Plasma 5+ */ Noto Sans,
    /* fallback */ sans-serif,
    /* macOS emoji */ "Apple Color Emoji",
    /* Windows emoji */ "Segoe UI Emoji",
    /* Windows emoji */ "Segoe UI Symbol",
    /* Linux emoji */ "Noto Color Emoji";
}
Pre-formatted and code-formatted text uses the monospace system font
code, kbd, pre, samp {
  font-family:
    /* macOS 10.10+ */ Menlo,
    /* Windows 6+ */ Consolas,
    /* Android 4+ */ Roboto Mono,
    /* Ubuntu 10.10+ */ Ubuntu Monospace,
    /* KDE Plasma 5+ */ Noto Mono,
    /* KDE Plasma 4+ */ Oxygen Mono,
    /* Linux/OpenOffice fallback */ Liberation Mono,
    /* fallback */ monospace;
}

Reduce Motion

[sanitize.css] includes a separate stylesheet for restricting motion when the user has requested this at a system level.

<link href="https://unpkg.com/sanitize.css" rel="stylesheet" />
<link href="https://unpkg.com/sanitize.css/reduce-motion.css" rel="stylesheet" />

Reduce Motion Features

Animations, scrolling effects, and transitions are reduced in all browsers
@media (prefers-reduced-motion: reduce) {
  *,
  ::before,
  ::after {
    animation-delay: -1ms !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    background-attachment: initial !important;
    scroll-behavior: auto !important;
    transition-delay: 0s !important;
    transition-duration: 0s !important;
  }
}

Contributing

Please read the contribution guidelines in order to make the contribution process easy and effective for everyone involved.

Acknowledgements

sanitize.css is a project by Jonathan Neal, built upon normalize.css, a project by Jonathan Neal, co-created with Nicolas Gallagher.

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