Gridlines for Tailwind CSS

An experimental default experience for Tailwind CSS that uses gridlines and fractions for spatial reasoning.

Note: This is under active development and may be subject to breaking changes until it reaches a stable version 1.0.0. Not recommended for production yet but please play around if this idea resonates with you.

What is this?

Gridlines for Tailwind CSS is a reimagining of Tailwind's spacing system inspired by grid paper. It is a drop-in plugin that adds a preset which moves all spacing-related utilities over to to the new system. It also includes the unit utility to scale the spacing values per-element and some overlay utilities to help visualize the new spacing values.

The core idea is to switch from reasoning about layout in absolute pixels to reasoning in ratios and fractions relative to your base grid cell size. This allows for creating responsive designs that can be scaled by changing one value - theme.base - which is useful for adapting to device contexts where the user can be very close to the screen, such as tablets and mobile phones, or very far from the screen, such as so-called '10-foot' UI for TV and advertising panels.

Installation

Install with your favorite NodeJS package manager:

$ npm install tailwindcss-gridlines

$ yarn add tailwindcss-gridlines

Add to your Tailwind CSS config file:

// tailwind.config.js

module.exports = {
  theme: {
    // ...
  },
  plugins: [
    require('tailwindcss-gridlines')
  ],
}

Documentation

Please see the documentation Wiki for a full description of what is new and what has changed.

New Utilities

Base Grid Cell Size

The core unit of gridlines is your base grid cell size. You can think of this as the equivalent of the 1cm in centimetre graph paper. Changing this value scales your layout proportionally.

| Name | Size | | ---- | ---- | | base | 24px |

Controlling Per-Element

• See unit documentation

The new unit utility can be used to adjust the relative sizing for an individual element and its children.

Customizing

You can customize the base unit by editing the theme.base value of your Tailwind config:

// tailwind.config.js

module.exports = {
  theme: {
    base: '28px' // Changes the base grid cell size to 28px
  },
  // ...
}

You can make the base unit responsive using the breakpoint names defined in the theme.screens object as keys:

// tailwind.config.js

module.exports = {
  theme: {
    base: {
      default: '20px', // Use a smaller grid cell size by default for smaller screens
      lg: '24px' // At the `lg` breakpoint, scale the grid size to 24px as these devices are probably held further away from the user
    }
  },
  // ...
}

Gridlines

• See gridlines documentation

Overlay a grid to help visually aid the design process.

Spacing Scale

• See spacing documentation

Gridlines is a complete overhaul of the spacing scale in Tailwind CSS.

With vanilla Tailwind, the spacing scale uses decimals and is equivalent to a grid with a base unit size of 4px. With Gridlines, the spacing scale uses fractions and you define the base unit size that the spacing scale is a fraction of. By default, Gridlines uses a base unit size of 24px.

Example of the fraction scale from 0 to 1 with a base unit of 24px:

| Name | Size | Pixels | | ------ | ----- | -------- | | 0 | 0 | 0px | | px | 1px | 1px | | 1/8 | 0.125 | 3px | | 2/8 | 0.25 | 6px | | 3/8 | 0.375 | 9px | | 4/8 | 0.5 | 12px | | 5/8 | 0.625 | 15px | | 6/8 | 0.75 | 18px | | 7/8 | 0.875 | 21px | | 1/5 | 0.2 | 4.8px | | 2/5 | 0.4 | 9.6px | | 3/5 | 0.6 | 14.4px | | 4/5 | 0.8 | 19.12px | | 1/4 | 0.25 | 6px | | 2/4 | 0.5 | 12px | | 3/4 | 0.75 | 18px | | 1/3 | 0.333 | 7.992px | | 2/3 | 0.666 | 16.008px | | 1/2 | 0.5 | 12px | | 1 | 1 | 24px |

Contributing

Feedback is welcome, please use GitHub issues appropriately. This idea has been rattling around in my head since 2018 so fresh perspectives may lead to greater insight.

If suggesting any major changes please make sure it is well reasoned and in line with the core principles of this project. Understand I am one busy person and require a description of the problem and a compelling argument for the proposed solution in order to consider it properly.

License

Gridlines for Tailwind CSS is MIT licensed.