fix

static/www/1.html

@@ -159,14 +159,16 @@
         /* Sticky in-content scroll indicator (same behavior as the earlier file) */
         #scrollDownBtn {
             position: sticky;
-            /* inside scrollable main */
             margin-left: auto;
             bottom: 1rem;
             align-self: flex-end;
             right: 1rem;
             transform: translate(-1rem, 0);
             z-index: 1030;
-            display: none;
+            display: inline-flex;
+            /* <--- force visible */
+            align-items: center;
+            justify-content: center;
             border: none;
             border-radius: 999px;
             width: 36px;

static/www/index copy.html

@@ -159,16 +159,14 @@
         /* Sticky in-content scroll indicator (same behavior as the earlier file) */
         #scrollDownBtn {
             position: sticky;
+            /* inside scrollable main */
             margin-left: auto;
             bottom: 1rem;
             align-self: flex-end;
             right: 1rem;
             transform: translate(-1rem, 0);
             z-index: 1030;
-            display: inline-flex;
-            /* <--- force visible */
-            align-items: center;
-            justify-content: center;
+            display: none;
             border: none;
             border-radius: 999px;
             width: 36px;