tailwindcss-pseudo-elements

TailwindCSS Plug-in that adds variants of pseudo elements (::before, ::after, ::first-letter, etc.).

• Getting Started
  • Install
    • NPM
    • Yarn
  • Write the configuration for the plug-in
  • Set the variants
  • Write the HTML
    • Content Property Utilities
    • Empty Property Utility
• Options
  • customPseudoClasses and customPseudoElements
  • contentUtilities
  • emptyContent
  • classNameReplacer
• Recommended
  • tailwindcss-aspect-ratio

Getting Started

Install

NPM

npm install tailwindcss-pseudo-elements --save-dev

Yarn

yarn add tailwindcss-pseudo-elements -D

Write the configuration for the plug-in

Pass the option object to the plug-in as follows:

module.exports = {
  plugins: [
    require('tailwindcss-pseudo-elements')({
      customPseudoClasses: ['foo'],
      customPseudoElements: ['bar'],
      contentUtilities: false,
      emptyContent: false,
      classNameReplacer: {
        'hover:before:text-black': 'hbt',
      },
    }),
  ],
}

Set the variants

Naming convention of the variants is like pseudo-class:pseudo-class::pseudo-element.
An example configuration is shown below.

module.exports = {
  variants: {
    extend: {
      textColor: [
        'responsive',
        'hover',
        'focus',
        'before',
        'after',
        'hover::before',
        'hover::after',
        'focus::before',
        'checked:hover',
        'checked:hover::before',
      ],
    },
  },
}

Write the HTML

<div
  class="relative
    before:aspect-ratio-4/3
    hover:before:aspect-ratio-1/1
    before:empty-content"
>
  <img class="absolute pin w-full h-full" src="..." />
</div>

Content Property Utilities

There are utilities that set the attributes of HTML elements to the content property.

Mark it up as follows:

<p
  class="content-before content-after content-hover-before"
  tw-content-before="🧡"
  tw-content-hover-before="💖"
  tw-content-after="💙️"
>
  Tailwind CSS
</p>

NOTE: If you encounter problems with AMP Validation, you can work around them by setting the prefix with the contentUtilities option.

Empty Property Utility

There is a utility class that sets { content: "" } in the ::before.

<p class="before:empty-content"></p>

Options

customPseudoClasses and customPseudoElements

You can set up your own pseudo-classes and pseudo-elements.

type: string[]
default: []

contentUtilities

Configuration of the Content Property Utilities.

type: boolean | { "prefix": string }
default: { "prefix": "tw-content" }

emptyContent

Whether to generate the Empty Property Utility.

type: boolean default: true

classNameReplacer

You can replace frequently used class names with different names.

type: Record<string, string>
default: {}

Recommended

tailwindcss-aspect-ratio

  plugins: [
    require('tailwindcss-pseudo-elements')(pseudoOptions),
    require('tailwindcss-aspect-ratio')({
      ratios: {
        '16/9': [16, 9],
        '4/3': [4, 3],
        '3/2': [3, 2],
        '1/1': [1, 1],
      },
      variants: ['before', 'hover::before', 'responsive'],
    }),
  ],
}