From bc2958e3fe6c0c48e659f532850e520456eb1fbd Mon Sep 17 00:00:00 2001
From: Aaron Robertshaw <60436221+aaronrobertshaw@users.noreply.github.com>
Date: Thu, 1 Oct 2026 09:16:57 +0800
Subject: [PATCH] Embed: Add minimum width and height support

---
 docs/reference-guides/core-blocks/README.md | 2 +-
 packages/block-library/src/embed/README.md  | 3 +++
 packages/block-library/src/embed/block.json | 4 ++++
 packages/block-library/src/embed/style.scss | 8 +++++++-
 4 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/docs/reference-guides/core-blocks/README.md b/docs/reference-guides/core-blocks/README.md
index 6d2046b8e725a6..b0b490eb9094b5 100644
--- a/docs/reference-guides/core-blocks/README.md
+++ b/docs/reference-guides/core-blocks/README.md
@@ -321,7 +321,7 @@ Add a block that displays content pulled from other sites, like Twitter or YouTu
 
 -	**Name:** [core/embed](https://developer.wordpress.org/block-editor/reference-guides/core-blocks/core-blocks-embed/core-block-embed/)
 -	**Category:** [embed](https://developer.wordpress.org/block-editor/reference-guides/core-blocks/core-blocks-embed/)
--	**Supports:** align, anchor, interactivity (clientNavigation), spacing (margin, padding)
+-	**Supports:** align, anchor, dimensions (minHeight, minWidth), interactivity (clientNavigation), spacing (margin, padding)
 -	**Attributes:** allowResponsive, caption, previewable, providerNameSlug, responsive, type, url
 
 ## File
diff --git a/packages/block-library/src/embed/README.md b/packages/block-library/src/embed/README.md
index edd38fda28fcda..b92e2683b49caa 100644
--- a/packages/block-library/src/embed/README.md
+++ b/packages/block-library/src/embed/README.md
@@ -28,6 +28,9 @@ _Defined via the [`supports`](https://developer.wordpress.org/block-editor/refer
 
 - [`anchor`](https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/#anchor): `true`
 - [`align`](https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/#align): `true`
+- [`dimensions`](https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/#dimensions):
+  - `minHeight`: `true`
+  - `minWidth`: `true`
 - [`spacing`](https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/#spacing):
   - `margin`: `true`
   - `padding`: `true`
diff --git a/packages/block-library/src/embed/block.json b/packages/block-library/src/embed/block.json
index a7e161f430f915..41db597f299496 100644
--- a/packages/block-library/src/embed/block.json
+++ b/packages/block-library/src/embed/block.json
@@ -43,6 +43,10 @@
 	"supports": {
 		"anchor": true,
 		"align": true,
+		"dimensions": {
+			"minHeight": true,
+			"minWidth": true
+		},
 		"spacing": {
 			"margin": true,
 			"padding": true
diff --git a/packages/block-library/src/embed/style.scss b/packages/block-library/src/embed/style.scss
index eb3261f8655652..da0bd5fcd4e336 100644
--- a/packages/block-library/src/embed/style.scss
+++ b/packages/block-library/src/embed/style.scss
@@ -17,7 +17,9 @@
 }
 
 // Supply a min-width when inside a cover block, to prevent it from collapsing.
-.wp-block-cover .wp-block-embed {
+// :root :where() matches Global Styles specificity so a minimum set there can
+// win, since block library styles load first.
+:root :where(.wp-block-cover .wp-block-embed) {
 	min-width: 320px;
 	min-height: 240px;
 }
@@ -25,6 +27,10 @@
 // Allow embeds to grow and shrink inside flex group blocks (Stack/Row), preventing collapse while fitting available space.
 .wp-block-group.is-layout-flex .wp-block-embed {
 	flex: 1 1 0%;
+}
+
+// Lowered like the cover minimums above.
+:root :where(.wp-block-group.is-layout-flex .wp-block-embed) {
 	min-width: 0;
 }