diff --git a/packages/block-library/src/table/style.scss b/packages/block-library/src/table/style.scss
index 31a7ae479957a3..7e1a4ca401af61 100644
--- a/packages/block-library/src/table/style.scss
+++ b/packages/block-library/src/table/style.scss
@@ -1,6 +1,10 @@
 .wp-block-table {
 	// Fixed layout toggle
-	&.has-fixed-layout tbody {
+	&.has-fixed-layout thead,
+	&.has-fixed-layout tbody,
+	&.has-fixed-layout tfoot {
+		display: table;
 		table-layout: fixed;
+		width: 100%;
 	}
 }
diff --git a/packages/block-library/src/table/theme.scss b/packages/block-library/src/table/theme.scss
index 86872dfa9e84c3..85142028869f51 100644
--- a/packages/block-library/src/table/theme.scss
+++ b/packages/block-library/src/table/theme.scss
@@ -1,11 +1,15 @@
 .wp-block-table {
 	overflow-x: auto;
+	display: block; // Necessary in order for this table to be mobile responsive.
 	border-collapse: collapse;
 	width: 100%;
 
-	tbody {
+	thead,
+	tbody,
+	tfoot {
 		width: 100%;
 		min-width: $break-mobile / 2;
+		display: table;
 	}
 
 	td,