diff --git a/public/board.html b/public/board.html
index 99d9519..e8a43e1 100644
--- a/public/board.html
+++ b/public/board.html
@@ -62,7 +62,7 @@
   .bar2 { height: 8px; background: var(--panel2); border-radius: 4px; overflow: hidden; } .bar2 i { display: block; height: 100%; background: var(--accent); }
   .pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; max-width: 300px; margin: 14px auto 0; } .pad button { height: 64px; font-size: 26px; border-radius: 16px; background: var(--panel2); color: var(--text); border: 1px solid var(--line); font: inherit; font-size: 26px; }
   .dots { display: flex; justify-content: center; gap: 12px; margin: 12px 0; min-height: 18px; } .dots i { width: 16px; height: 16px; border-radius: 50%; background: var(--line); } .dots i.on { background: var(--accent); }
-  #ov { position: fixed; inset: 0; background: rgba(0,0,0,.6); display: grid; place-items: center; padding: 18px; } #ov[hidden] { display: none; }
+  #ov { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.6); display: grid; place-items: center; padding: 18px; } #ov[hidden] { display: none; }
   #ovb .tiles { flex-wrap: wrap; overflow: visible; justify-content: center; } #ovb .tile { width: 96px; } #ovb { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 20px; width: 100%; max-width: 520px; text-align: center; max-height: 92dvh; overflow-y: auto; scrollbar-width: none; }
   .err { color: var(--danger); min-height: 20px; }
   /* touch screen: things scroll by dragging, with no scroll bars */