fixed bugs:

- suppressed display of search results if nothing was found but there were previous searches
- improved display timing of search results/initial pages, which led to false displays

src/main/resources/static/main.css

@@ -78,10 +78,6 @@ header {
     text-align: center;
 }
 
-.hidden {
-    display: none;
-}
-
 #search-entry:focus-visible {
     outline: none;
 }
@@ -93,6 +89,11 @@ header {
     gap: 1rem;
 }
 
+.hidden {
+    display: none;
+}
+
+
 @container (width < 60ch) {
     .datasets {
         grid-template-columns: 1fr;