[WebProfilerBundle] tweaked CSS

src/Symfony/Bundle/WebProfilerBundle/Resources/public/css/profiler.css

@@ -341,6 +341,10 @@ table th.value
     display: none;
 }
 
+ul.alt {
+    margin:10px 0 30px;
+}
+
 ul.alt li {
     padding: 5px 7px;
     font-size: 13px;