invoke css

IPython/html/static/style/style.min.css

@@ -8668,6 +8668,7 b' ul.breadcrumb span {'
 }
 .list_header {
   font-weight: bold;
+  background-color: #eeeeee;
 }
 .list_container {
   margin-top: 4px;
@@ -8690,6 +8691,9 b' ul.breadcrumb span {'
 .list_item a {
   text-decoration: none;
 }
+.list_item:nth-child(odd) {
+  background-color: #f6f6f6;
+}
 .action_col {
   text-align: right;
 }