UI: drop box no longer overlaps the subtitle

docparse/ui.html

@@ -12,7 +12,7 @@
   main { max-width:1100px; margin:0 auto; padding:24px 16px 48px; }
   h1 { font-size:22px; margin:0 0 4px; }
   p.sub { color:var(--muted); margin:0 0 20px; }
-  #drop { border:2px dashed var(--line); border-radius:12px; padding:28px; text-align:center; background:var(--panel); cursor:pointer; }
+  #drop { display:block; border:2px dashed var(--line); border-radius:12px; padding:28px; text-align:center; background:var(--panel); cursor:pointer; }
   #drop.over { border-color:var(--accent); }
   .opts { display:flex; gap:16px; flex-wrap:wrap; margin:12px 0; color:var(--muted); font-size:14px; }
   .tabs { display:flex; gap:4px; margin-top:20px; border-bottom:1px solid var(--line); }