diff --git a/src/DebugBar/Resources/widgets.css b/src/DebugBar/Resources/widgets.css
index 5aab4ae..b421fe7 100644
--- a/src/DebugBar/Resources/widgets.css
+++ b/src/DebugBar/Resources/widgets.css
@@ -1,4 +1,3 @@
-
 ul.phpdebugbar-widgets-list {
   margin: 0;
   padding: 0;
@@ -124,6 +123,7 @@ ul.phpdebugbar-widgets-timeline {
     height: 20px;
     position: relative;
     border-bottom: 1px solid #eee;
+    display: block;
   }
   ul.phpdebugbar-widgets-timeline li:hover {
     background: #fafafa;
@@ -289,4 +289,4 @@ div.phpdebugbar-widgets-mails li.phpdebugbar-widgets-list-item pre.phpdebugbar-w
   padding: 5px;
   border: 1px solid #ddd;
   font-family: monospace;
-}
\ No newline at end of file
+}