Clean up line heights & add line height utilities (#29271)

3 files changed, 14 insertions, 1 deletions

diff --git a/site/content/docs/4.3/content/typography.md b/site/content/docs/4.3/content/typography.md
index 201cf9381..c8f5c1a69 100644
--- a/site/content/docs/4.3/content/typography.md
+++ b/site/content/docs/4.3/content/typography.md
@@ -161,7 +161,7 @@ While not shown above, feel free to use `<b>` and `<i>` in HTML5. `<b>` is meant
 
 ## Text utilities
 
-Change text alignment, transform, style, weight, and color with our [text utilities]({{< docsref "/utilities/text" >}}) and [color utilities]({{< docsref "/utilities/colors" >}}).
+Change text alignment, transform, style, weight, line-height and color with our [text utilities]({{< docsref "/utilities/text" >}}) and [color utilities]({{< docsref "/utilities/colors" >}}).
 
 ## Abbreviations
 
diff --git a/site/content/docs/4.3/migration.md b/site/content/docs/4.3/migration.md
index 920ca4e5a..d6a2b5e17 100644
--- a/site/content/docs/4.3/migration.md
+++ b/site/content/docs/4.3/migration.md
@@ -36,6 +36,7 @@ Changes to our source Sass files and compiled CSS.
 - Removed print styles and `$enable-print-styles` variable. Print display classes, however, have remained intact. [See #28339](https://github.com/twbs/bootstrap/pull/28339).
 - Dropped `color()`, `theme-color()` & `gray()` functions in favor of variables. [See #29083](https://github.com/twbs/bootstrap/pull/29083)
 - The `theme-color-level()` function is renamed to `color-level()` and now accepts any color you want instead of only `$theme-color` colors. [See #29083](https://github.com/twbs/bootstrap/pull/29083)
+- Line heights are dropped from several components to simplify our codebase. The `button-size()` and `pagination-size()` do not accept line height parameters anymore. [See #29271](https://github.com/twbs/bootstrap/pull/29271)
 
 ## JavaScript
 
@@ -132,6 +133,7 @@ Badges were overhauled to better differentiate themselves from buttons and to be
 
 - Renamed `.text-monospace` to `.font-monospace`
 - Decreased the number of responsive order utilities per breakpoint. The highest order utility with a number now is `.order-5` instead of `.order-12`. [See #28874](https://github.com/twbs/bootstrap/pull/28874).
+- New `line-height` utilities: `.lh-1`, `.lh-sm`, `.lh-base` and `.lh-lg`. See [here]({{< docsref "/utilities/text#line-height" >}}).
 - **Todo:** Drop `.text-hide` as it's an antiquated method for hiding text that shouldn't be used anymore
 - **Todo:** Split utilities into property-value utility classes and helpers
 
diff --git a/site/content/docs/4.3/utilities/text.md b/site/content/docs/4.3/utilities/text.md
index 0ea7c75a2..3ae40fabc 100644
--- a/site/content/docs/4.3/utilities/text.md
+++ b/site/content/docs/4.3/utilities/text.md
@@ -78,6 +78,17 @@ Quickly change the weight (boldness) of text or italicize text.
 <p class="font-italic">Italic text.</p>
 {{< /example >}}
 
+## Line height
+
+Change the line height with `.lh-*` utilities.
+
+{{< example >}}
+<p class="lh-1">Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Donec sed odio dui. Cras mattis pannenkoek purus sit amet fermentum. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Nullam id dolor id nibh ultricies vehicula ut id elit. Cras mattis consectetur purus sit amet fermentum.</p>
+<p class="lh-sm">Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Donec sed odio dui. Cras mattis pannenkoek purus sit amet fermentum. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Nullam id dolor id nibh ultricies vehicula ut id elit. Cras mattis consectetur purus sit amet fermentum.</p>
+<p class="lh-base">Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Donec sed odio dui. Cras mattis pannenkoek purus sit amet fermentum. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Nullam id dolor id nibh ultricies vehicula ut id elit. Cras mattis consectetur purus sit amet fermentum.</p>
+<p class="lh-lg">Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Donec sed odio dui. Cras mattis pannenkoek purus sit amet fermentum. Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Nullam id dolor id nibh ultricies vehicula ut id elit. Cras mattis consectetur purus sit amet fermentum.</p>
+{{< /example >}}
+
 ## Monospace
 
 Change a selection to our monospace font stack with `.font-monospace`.