diff --git a/site2/website-next/src/css/custom.css b/site2/website-next/src/css/custom.css
index 06feb70309e9..d32855ba9ec6 100644
--- a/site2/website-next/src/css/custom.css
+++ b/site2/website-next/src/css/custom.css
@@ -981,4 +981,20 @@ footer .row.footer__links {
 }
 .theme-doc-version-badge {
   display: none;
+}
+
+.prism-code {
+  counter-reset: line-number;
+}
+
+.prism-code .token-line::marker {
+  color: var(--ifm-color-gray-700);
+  content: counter(line-number);
+}
+
+.prism-code .token-line {
+  counter-increment: line-number;
+  display: list-item;
+  padding-left: var(--ifm-pre-padding);
+  margin-left: var(--ifm-global-spacing);
 }
\ No newline at end of file