diff --git a/scripts/barrier_picker_app/static/index.html b/scripts/barrier_picker_app/static/index.html
index 81ca80a..8742fd4 100644
--- a/scripts/barrier_picker_app/static/index.html
+++ b/scripts/barrier_picker_app/static/index.html
@@ -110,10 +110,11 @@
 
     /* Annotation bar (existing-mark indicator below the video) */
     #annotation-bar { position: relative; width: 100%; max-width: 1400px;
-                       height: 18px; background: #181818; border: 1px solid #333;
-                       border-radius: 3px; margin-top: 0.5rem; cursor: pointer; }
+                       height: 18px; background: #555; border: 1px solid #666;
+                       border-radius: 3px; margin: 0.5rem 0 2rem;
+                       cursor: pointer; }
     #annotation-bar.empty { background: transparent; border-color: transparent;
-                             cursor: default; height: 0.6rem; }
+                             cursor: default; height: 0; margin: 0; }
     #annotation-bar .mark-line { position: absolute; top: -2px; bottom: -2px;
                                   width: 3px; background: #f44;
                                   box-shadow: 0 0 4px rgba(255,80,80,0.7); }