Änderungen CSS

css/navbarsidebar.css

@@ -49,6 +49,10 @@ a:focus {
     box-shadow: 0.063em 0.063em 0.188em rgba(0,0,0,0.1);
 }
 
+.nav-item dropdown::after {
+    visibility: hidden;
+    color: #fff;
+}
 .nav-item dropdown::marker {
     background-color: #fff;
     font-size: 0;