Index: src/wp-content/themes/twentynineteen/inc/color-patterns.php
===================================================================
--- src/wp-content/themes/twentynineteen/inc/color-patterns.php	(revision 44737)
+++ src/wp-content/themes/twentynineteen/inc/color-patterns.php	(working copy)
@@ -132,20 +132,14 @@
 		}
 
 		/*
-		 * Set left border color for:
+		 * Set border color for:
 		 * wp block quote
+		 * :focus
 		 */
 		blockquote,
 		.entry .entry-content blockquote,
 		.entry .entry-content .wp-block-quote:not(.is-large),
-		.entry .entry-content .wp-block-quote:not(.is-style-large) {
-			border-left-color: hsl( ' . $primary_color . ', ' . $saturation . ', ' . $lightness . ' ); /* base: #0073a8; */
-		}
-
-		/*
-		 * Set border color for:
-		 * :focus
-		 */
+		.entry .entry-content .wp-block-quote:not(.is-style-large),
 		input[type="text"]:focus,
 		input[type="email"]:focus,
 		input[type="url"]:focus,
@@ -231,7 +225,7 @@
 
 		.editor-block-list__layout .editor-block-list__block .wp-block-quote:not(.is-large):not(.is-style-large),
 		.editor-styles-wrapper .editor-block-list__layout .wp-block-freeform blockquote {
-			border-left: 2px solid hsl( ' . $primary_color . ', ' . $saturation . ', ' . $lightness . ' ); /* base: #0073a8; */
+			border-color: hsl( ' . $primary_color . ', ' . $saturation . ', ' . $lightness . ' ); /* base: #0073a8; */
 		}
 
 		.editor-block-list__layout .editor-block-list__block .wp-block-pullquote.is-style-solid-color:not(.has-background-color) {
Index: src/wp-content/themes/twentynineteen/sass/blocks/_blocks.scss
===================================================================
--- src/wp-content/themes/twentynineteen/sass/blocks/_blocks.scss	(revision 44737)
+++ src/wp-content/themes/twentynineteen/sass/blocks/_blocks.scss	(working copy)
@@ -452,7 +452,8 @@
 
 		&:not(.is-large),
 		&:not(.is-style-large) {
-			border-left: 2px solid $color__link;
+			border-width: 2px;
+			border-color: $color__link;
 			padding-top: 0;
 			padding-bottom: 0;
 		}
Index: src/wp-content/themes/twentynineteen/style-editor.css
===================================================================
--- src/wp-content/themes/twentynineteen/style-editor.css	(revision 44737)
+++ src/wp-content/themes/twentynineteen/style-editor.css	(working copy)
@@ -940,7 +940,8 @@
 
 /** === Blockquote === */
 .wp-block-quote:not(.is-large):not(.is-style-large) {
-  border-left: 2px solid #0073aa;
+  border-width: 2px;
+  border-color: #0073aa;
 }
 
 .wp-block-quote.is-large, .wp-block-quote.is-style-large {
Index: src/wp-content/themes/twentynineteen/style-editor.scss
===================================================================
--- src/wp-content/themes/twentynineteen/style-editor.scss	(revision 44737)
+++ src/wp-content/themes/twentynineteen/style-editor.scss	(working copy)
@@ -391,7 +391,8 @@
 .wp-block-quote {
 
 	&:not(.is-large):not(.is-style-large) {
-		border-left: 2px solid $color__link;
+		border-width: 2px;
+		border-color: $color__link;
 	}
 
 	&.is-large,
Index: src/wp-content/themes/twentynineteen/style-rtl.css
===================================================================
--- src/wp-content/themes/twentynineteen/style-rtl.css	(revision 44737)
+++ src/wp-content/themes/twentynineteen/style-rtl.css	(working copy)
@@ -5477,7 +5651,8 @@
 }
 
 .entry .entry-content .wp-block-quote:not(.is-large), .entry .entry-content .wp-block-quote:not(.is-style-large) {
-  border-right: 2px solid #0073aa;
+  border-width: 2px;
+  border-color: #0073aa;
   padding-top: 0;
   padding-bottom: 0;
 }
Index: src/wp-content/themes/twentynineteen/style.css
===================================================================
--- src/wp-content/themes/twentynineteen/style.css	(revision 44737)
+++ src/wp-content/themes/twentynineteen/style.css	(working copy)
@@ -5663,7 +5663,8 @@
 }
 
 .entry .entry-content .wp-block-quote:not(.is-large), .entry .entry-content .wp-block-quote:not(.is-style-large) {
-  border-left: 2px solid #0073aa;
+  border-width: 2px;
+  border-color: #0073aa;
   padding-top: 0;
   padding-bottom: 0;
 }