fix: Hide one page navigation on mobile. In the future it should be better done.

src/QUI/Menu/OnePageNav.css

@@ -56,4 +56,10 @@
 
 .onePageNav-entry a.active {
     font-weight: bold;
+}
+
+@media screen and (max-width: 767px) {
+    .onePageNav-container {
+        display: none;
+    }
 }
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