diff --git a/quartz/styles/custom.scss b/quartz/styles/custom.scss
index 7ba9d918a..17dee5881 100644
--- a/quartz/styles/custom.scss
+++ b/quartz/styles/custom.scss
@@ -7,3 +7,8 @@ a[href^=http]:not([href*=pmcf\.xyz]):after {
 a.external {
   text-decoration: underline;
 }
+
+a.internal {
+  border-radius: .1875rem;
+  padding: 0 .3rem;
+}