Quick reference

decoration-autotext-decoration-thickness: auto;
decoration-from-fonttext-decoration-thickness: from-font;
decoration-0text-decoration-thickness: 0px;
decoration-1text-decoration-thickness: 1px;
decoration-2text-decoration-thickness: 2px;
decoration-4text-decoration-thickness: 4px;
decoration-8text-decoration-thickness: 8px;

Basic usage

Setting the text decoration thickness

Use the decoration-* utilities to change the thickness of an element’s text decoration.


The quick brown fox jumps over the lazy dog.


The quick brown fox jumps over the lazy dog.


The quick brown fox jumps over the lazy dog.

<p class="underline decoration-1 ...">The quick brown fox...</p>
<p class="underline decoration-2 ...">The quick brown fox...</p>
<p class="underline decoration-4 ...">The quick brown fox...</p>

Applying conditionally

Hover, focus, and other states

Tailwind lets you conditionally apply utility classes in different states using variant modifiers. For example, use hover:decoration-4 to only apply the decoration-4 utility on hover.

<p class="underline hover:decoration-4">
  <!-- ... -->

For a complete list of all available state modifiers, check out the Hover, Focus, & Other States documentation.

Breakpoints and media queries

You can also use variant modifiers to target media queries like responsive breakpoints, dark mode, prefers-reduced-motion, and more. For example, use md:decoration-4 to apply the decoration-4 utility at only medium screen sizes and above.

<p class="underline md:decoration-4">
  <!-- ... -->

To learn more, check out the documentation on Responsive Design, Dark Mode and other media query modifiers.

Using custom values

Customizing your theme

You can customize the decoration-* utilities by editing theme.textDecorationThickness or theme.extend.textDecorationThickness in your tailwind.config.js file.

module.exports = {
  theme: {
    extend: {
      textDecorationThickness: {
        3: '3px',

Learn more about customizing the default theme in the theme customization documentation.

Arbitrary values

If you need to use a one-off text-decoration-thickness value that doesn’t make sense to include in your theme, use square brackets to generate a property on the fly using any arbitrary value.

<p class="decoration-[3px]">
  <!-- ... -->

Learn more about arbitrary value support in the arbitrary values documentation.