This question explores Tailwind CSS and addresses practical considerations related to: How do I customize the default font sizes in Tailwind?

To customize the default font sizes in Tailwind CSS, you need to extend the theme configuration in your `tailwind.config.js` file. This allows you to define custom font sizes that can be used throughout your project. // tailwind.config.js module.exports = { theme: { extend: { fontSize: { 'xs': '0.75rem', 'sm': '0.875rem', 'base': '1rem', 'lg': '1.125rem', 'xl': '1.25rem', '2xl': '1.5rem', '3xl': '1.875rem', '4xl': '2.25rem', '5xl': '3rem', '6xl': '4rem', } } } } ADDITIONAL COMMENT: To apply these custom font sizes, use the class names like "text-xs", "text-lg", etc., in your HTML. Ensure you have the Tailwind CLI or PostCSS configured to process your `tailwind.config.js` changes. Extending the theme allows you to add new sizes without removing the default ones. You can also completely override the default font sizes by defining them directly under `fontSize` instead of using `extend`. ✅

How do I customize the default font sizes in Tailwind?

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How do I customize the default font sizes in Tailwind?

Asked on Oct 19, 2025

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To customize the default font sizes in Tailwind CSS, you need to extend the theme configuration in your `tailwind.config.js` file. This allows you to define custom font sizes that can be used throughout your project.

<!-- BEGIN COPY / PASTE -->
    // tailwind.config.js
    module.exports = {
      theme: {
        extend: {
          fontSize: {
            'xs': '0.75rem',
            'sm': '0.875rem',
            'base': '1rem',
            'lg': '1.125rem',
            'xl': '1.25rem',
            '2xl': '1.5rem',
            '3xl': '1.875rem',
            '4xl': '2.25rem',
            '5xl': '3rem',
            '6xl': '4rem',
          }
        }
      }
    }
    <!-- END COPY / PASTE -->

Additional Comment:

To apply these custom font sizes, use the class names like "text-xs", "text-lg", etc., in your HTML.
Ensure you have the Tailwind CLI or PostCSS configured to process your `tailwind.config.js` changes.
Extending the theme allows you to add new sizes without removing the default ones.
You can also completely override the default font sizes by defining them directly under `fontSize` instead of using `extend`.

✅ Answered with Tailwind CSS best practices.

Ask any question about Tailwind CSS here... and get an instant response.

How do I customize the default font sizes in Tailwind?

Asked on Oct 19, 2025

Answer

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