diff --git a/frontend-web/src/components/page-sdebar.css b/frontend-web/src/components/page-sdebar.css
index 29b4e477..de2edd84 100644
--- a/frontend-web/src/components/page-sdebar.css
+++ b/frontend-web/src/components/page-sdebar.css
@@ -77,6 +77,19 @@
     position: relative;
 }
 
+.item-nav-active::before {
+    content: '';
+    position: absolute;
+    right: -10px;
+    top: 50%;
+    transform: translateY(-50%);
+    width: 0;
+    height: 0;
+    border-top: 8px solid transparent;
+    border-bottom: 8px solid transparent;
+    border-left: 10px solid rgba(0, 98, 217, 0.45);
+    pointer-events: none;
+}
 .item-nav-active::after {
     content: '';
     position: absolute;