Line Height

Relative line-heights

Use the leading-none, leading-tight, leading-snug, leading-normal, leading-relaxed, and leading-loose utilities to give an element a relative line-height based on its current font-size.

Fixed line-heights

Use the leading-{size} utilities to give an element a fixed line-height, irrespective of the current font-size. These are useful when you need very precise control over an element’s final size.

Responsive

To control the line height of an element at a specific breakpoint, add a {screen}: prefix to any existing line height utility. For example, use md:leading-loose to apply the leading-loose utility at only medium screen sizes and above.

<p class="leading-none md:leading-loose ...">Lorem ipsum dolor sit amet ...</p>

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

It’s important to note that by default, Tailwind’s font-size utilities each set their own default line-height. This means that any time you use a responsive font-size utility like sm:text-xl, any explicit line-height you have set for a smaller breakpoint will be overridden.

<!-- The `leading-loose` class will be overridden at the `md` breakpoint -->
<p class="text-lg leading-loose md:text-xl">
  Lorem ipsum dolor sit amet ...
</p>

If you want to override the default line-height after setting a breakpoint-specific font-size, make sure to set a breakpoint-specific line-height as well:

<!-- The `leading-loose` class will be overridden at the `md` breakpoint -->
<p class="text-lg leading-loose md:text-xl md:leading-loose">
  Lorem ipsum dolor sit amet ...
</p>

Using the same line-height across different font sizes is generally not going to give you good typographic results. Line-height should typically get smaller as font-size increases, so the default behavior here usually saves you a ton of work. If you find yourself fighting it, you can always customize your font-size scale to not include default line-heights.

Customizing

By default, Tailwind provides six relative and eight fixed line-height utilities. You change, add, or remove these by customizing the lineHeight section of your Tailwind theme config.

  // tailwind.config.js
  module.exports = {
    theme: {
      extend: {
        lineHeight: {
+         'extra-loose': '2.5',
+         '12': '3rem',
        }
      }
    }
  }

Variants

默認情況下, 只有 響應式 的 line height 變化模式 (variants) 會產生。

在 tailwind.config.js 的 variants 區塊中變更 lineHeight 屬性來決定有哪些變化模式會生成。

舉個例子來說，這個設定將會生成 響應式 和 hover 的變化模式。

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

Disabling

如果你不打算在專案中使用 line height 功能，可以在你的設定檔裡的 corePlugins 屬性中將 lineHeight 設定為 false 來停用功能：

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