diff --git a/src/wp-content/themes/twentytwenty/assets/css/editor-style-block-rtl.css b/src/wp-content/themes/twentytwenty/assets/css/editor-style-block-rtl.css
index c3261fd203..eb54f151f1 100644
--- a/src/wp-content/themes/twentytwenty/assets/css/editor-style-block-rtl.css
+++ b/src/wp-content/themes/twentytwenty/assets/css/editor-style-block-rtl.css
@@ -634,6 +634,10 @@ hr.wp-block-separator.is-style-dots::before {
 	padding: 5px 20px 5px 0;
 }
 
+.wp-block-quote.is-style-plain {
+	border: none;
+}
+
 .editor-styles-wrapper .wp-block-quote.has-text-align-center,
 .editor-styles-wrapper .wp-block-quote[style*="text-align:center"],
 .editor-styles-wrapper .wp-block-quote[style*="text-align: center"] {
diff --git a/src/wp-content/themes/twentytwenty/assets/css/editor-style-block.css b/src/wp-content/themes/twentytwenty/assets/css/editor-style-block.css
index 11a3a33f50..2e741a69e8 100644
--- a/src/wp-content/themes/twentytwenty/assets/css/editor-style-block.css
+++ b/src/wp-content/themes/twentytwenty/assets/css/editor-style-block.css
@@ -634,6 +634,10 @@ hr.wp-block-separator.is-style-dots::before {
 	padding: 5px 0 5px 20px;
 }
 
+.wp-block-quote.is-style-plain {
+	border: none;
+}
+
 .editor-styles-wrapper .wp-block-quote.has-text-align-center,
 .editor-styles-wrapper .wp-block-quote[style*="text-align:center"],
 .editor-styles-wrapper .wp-block-quote[style*="text-align: center"] {
diff --git a/src/wp-content/themes/twentytwenty/style-rtl.css b/src/wp-content/themes/twentytwenty/style-rtl.css
index 77ec6bcb0b..7dd80cb17e 100644
--- a/src/wp-content/themes/twentytwenty/style-rtl.css
+++ b/src/wp-content/themes/twentytwenty/style-rtl.css
@@ -3219,6 +3219,9 @@ figure.wp-block-gallery.alignfull {
 	margin: 0;
 	padding: 0;
 }
+.wp-block-quote.is-style-plain {
+	border: none;
+}
 
 .wp-block-pullquote blockquote p {
 	font-family: inherit;
diff --git a/src/wp-content/themes/twentytwenty/style.css b/src/wp-content/themes/twentytwenty/style.css
index 231104da6c..d4eeae6ba1 100644
--- a/src/wp-content/themes/twentytwenty/style.css
+++ b/src/wp-content/themes/twentytwenty/style.css
@@ -3237,6 +3237,9 @@ figure.wp-block-gallery.alignfull {
 	margin: 0;
 	padding: 0;
 }
+.wp-block-quote.is-style-plain {
+	border: none;
+}
 
 .wp-block-pullquote blockquote p {
 	font-family: inherit;