You're looking at the documentation for Tailwind CSS v2.

Justify Items

Utilities for controlling how grid items are aligned along their inline axis.

Default class reference

Class
Properties
justify-items-startjustify-items: start;
justify-items-endjustify-items: end;
justify-items-centerjustify-items: center;
justify-items-stretchjustify-items: stretch;

Start

Use justify-items-start to justify grid items against the start of their inline axis:

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<div class="grid justify-items-start ..."> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> <div>6</div> </div>

End

Use justify-items-end to justify grid items against the end of their inline axis:

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<div class="grid justify-items-end ..."> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> <div>6</div> </div>

Center

Use justify-items-center to justify grid items along their inline axis:

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<div class="grid justify-items-center ..."> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> <div>6</div> </div>

Stretch

Use justify-items-stretch to stretch items along their inline axis:

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<div class="grid justify-items-stretch ..."> <div>1</div> <div>2</div> <div>3</div> <div>4</div> <div>5</div> <div>6</div> </div>

Responsive

To justify flex items at a specific breakpoint, add a {screen}: prefix to any existing utility class. For example, use md:justify-items-center to apply the justify-items-center utility at only medium screen sizes and above.

<div class="justify-items-start md:justify-items-center"> <!-- ... --> </div>

For more information about Tailwind’s responsive design features, check out the Responsive Design documentation.

Customizing

Variants

By default, only responsive variants are generated for justify-items utilities.

You can control which variants are generated for the justify-items utilities by modifying the justifyItems property in the variants section of your tailwind.config.js file.

For example, this config will also generate hover and focus variants:

 // tailwind.config.js  module.exports = {   variants: {   extend: {  // ... +  justifyItems: ['hover', 'focus'],   }   }  }

Disabling

If you don't plan to use the justify-items utilities in your project, you can disable them entirely by setting the justifyItems property to false in the corePlugins section of your config file:

 // tailwind.config.js  module.exports = {   corePlugins: {  // ... +  justifyItems: false,   }  }