diff --git a/app/templates/base.html b/app/templates/base.html
index bc95816..8b7b4b3 100644
--- a/app/templates/base.html
+++ b/app/templates/base.html
@@ -99,9 +99,6 @@
       <button class="nav-icon-btn" title="Inbox">
         <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="22 12 16 12 14 15 10 15 8 12 2 12"/><path d="M5.45 5.11L2 12v6a2 2 0 002 2h16a2 2 0 002-2v-6l-3.45-6.89A2 2 0 0016.76 4H7.24a2 2 0 00-1.79 1.11z"/></svg>
       </button>
-      <button class="nav-icon-btn collapse-btn" @click="sidebarCollapsed = !sidebarCollapsed" title="Collapse sidebar">
-        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><polyline points="11 17 6 12 11 7"/><polyline points="18 17 13 12 18 7"/></svg>
-      </button>
       <button class="nav-icon-btn" @click="openQuickFind" title="Search">
         <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>
       </button>
diff --git a/static/css/app.css b/static/css/app.css
index c90cec6..53985ec 100644
--- a/static/css/app.css
+++ b/static/css/app.css
@@ -139,6 +139,7 @@ input, select, textarea { font-family: inherit; color: inherit; }
   cursor: pointer;
   transition: background 150ms;
   min-height: 32px;
+  position: relative;
 }
 .sidebar-workspace-header:hover,
 .sidebar-workspace-header.hover {