Fixes block visibility when the panel is collapsed

t-hamano · Sep 26, 2025 · Sep 24, 2025 · Sep 24, 2025 · Sep 24, 2025 · Sep 24, 2025
commit 71266946286f56eb62d72c28912046ad63603222
diff --git a/packages/block-library/src/accordion/style.scss b/packages/block-library/src/accordion/style.scss
@@ -0,0 +1,88 @@
+.wp-block-accordion-content {
+	display: grid;
+	grid-template-rows: max-content 0fr;
+}
+
+.wp-block-accordion-content.is-open {
+	grid-template-rows: max-content 1fr;
+
+	> .wp-block-accordion-header {
+		.accordion-content__toggle-icon.has-icon-plus {
+			transform: rotate(45deg);
+		}
+	}
+
+	.wp-block-accordion-panel {
+		display: block;
+	}
+}
+
+.accordion-content__toggle {
+	font-family: inherit;
+	font-size: inherit;
+	font-weight: inherit;
+	line-height: inherit;
+	letter-spacing: inherit;
+	text-transform: inherit;
+	text-decoration: inherit;
+	word-spacing: inherit;
+	background: none;
+	border: none;
+	color: inherit;
+	padding: var(--wp--preset--spacing--20, 1em) 0;
+	cursor: pointer;
+	outline: none;
+	overflow: hidden;
+	display: flex;
+	align-items: center;
+	text-align: inherit;
+	position: relative;
+	width: 100%;
+}
+
+.accordion-content__toggle > span {
+	width: 100%;
+}
+
+.is-layout-flow > .wp-block-accordion-panel,
+.wp-block-accordion-panel {
+	display: none;
+	overflow: hidden;
+	transition: all 0.2s ease-out;
+}
+
+// Prevent blockGap from Accordion Content block from adding extra margin between accordions.
+.wp-block-accordion-panel[inert],
+.wp-block-accordion-panel[aria-hidden="true"] {
+	margin-block-start: 0;
+}
+
+.accordion-panel__wrapper {
+	padding-bottom: var(--wp--preset--spacing--20, 1em);
+}
+
+/* No icon block style */
+.is-style-no-icon .accordion-content__toggle-icon {
+	background-color: unset;
+}
+
+.wp-block-accordion-header.icon-position-left .accordion-content__toggle {
+	/* stylelint-disable-next-line declaration-property-value-allowed-list -- This should be refactored to not use the row-reverse value. */
+	flex-direction: row-reverse;
+}
+
+.accordion-content__toggle:focus-visible {
+	outline: 2px solid -webkit-focus-ring-color;
+	outline-offset: 2px;
+}
+
+/* Add transitions only for users who do not prefer reduced motion */
+@media (prefers-reduced-motion: no-preference) {
+	.wp-block-accordion-content .accordion-content__toggle-icon {
+		transition: transform 0.2s ease-in-out;
+	}
+
+	.wp-block-accordion-content {
+		transition: grid-template-rows 0.3s ease-out;
+	}
+}