diff --git a/src/css/custom.css b/src/css/custom.css
index c816a8590e1..c15a126d6be 100644
--- a/src/css/custom.css
+++ b/src/css/custom.css
@@ -416,4 +416,16 @@ html[data-navbar='false'] .navbar {
   .redocusaurus .menu-content {
     top: 57px;
   }
+}
+
+.markdown a[target=_blank]::after {
+  content: "open_in_new";
+  display: inline-block;
+  font-family: var(--mdc-icon-font, "Material Symbols Outlined");
+  font-size: .875rem;
+  line-height: 1rem;
+  padding-left: 1px;
+  position: relative;
+  text-decoration: none;
+  top: 2px;
 }
\ No newline at end of file