diff --git a/packages/block-library/src/footnotes/style.scss b/packages/block-library/src/footnotes/style.scss
new file mode 100644
index 00000000000000..b5540b70e6f0fd
--- /dev/null
+++ b/packages/block-library/src/footnotes/style.scss
@@ -0,0 +1,18 @@
+.editor-styles-wrapper,
+.entry-content {
+	counter-reset: footnotes;
+}
+
+.fn {
+	vertical-align: super;
+	font-size: smaller;
+	counter-increment: footnotes;
+	display: inline-block;
+	text-indent: -9999999px;
+}
+
+.fn::after {
+	content: "[" counter(footnotes) "]";
+	text-indent: 0;
+	float: left;
+}
diff --git a/packages/block-library/src/style.scss b/packages/block-library/src/style.scss
index d3cb9667f3d0ac..9238e1f6269f54 100644
--- a/packages/block-library/src/style.scss
+++ b/packages/block-library/src/style.scss
@@ -55,5 +55,6 @@
 @import "./text-columns/style.scss";
 @import "./verse/style.scss";
 @import "./video/style.scss";
+@import "./footnotes/style.scss";
 
 @import "common.scss";