diff --git a/web/chat/chat-thread-list-item-menu.react.js b/web/chat/chat-thread-list-item-menu.react.js
--- a/web/chat/chat-thread-list-item-menu.react.js
+++ b/web/chat/chat-thread-list-item-menu.react.js
@@ -82,11 +82,9 @@
       <button onClick={toggleMenu}>
         <SWMansionIcon icon="menu-vertical" size={menuIconSize} />
       </button>
-      <div>
-        <button className={btnCls} onClick={toggleUnreadStatus}>
-          {toggleUnreadStatusButtonText}
-        </button>
-      </div>
+      <button className={btnCls} onClick={toggleUnreadStatus}>
+        {toggleUnreadStatusButtonText}
+      </button>
     </div>
   );
 }
diff --git a/web/chat/chat-thread-list.css b/web/chat/chat-thread-list.css
--- a/web/chat/chat-thread-list.css
+++ b/web/chat/chat-thread-list.css
@@ -191,6 +191,8 @@
 }
 .menuContentVisible {
   display: block;
+  background-color: #eeeeee;
+  color: black;
 }
 
 button.menuContent {