diff --git a/libreplan-webapp/src/main/webapp/common/css/libreplan_zk.css b/libreplan-webapp/src/main/webapp/common/css/libreplan_zk.css
index 4e95baf7d..3b1d31a12 100644
--- a/libreplan-webapp/src/main/webapp/common/css/libreplan_zk.css
+++ b/libreplan-webapp/src/main/webapp/common/css/libreplan_zk.css
@@ -1455,6 +1455,16 @@ display:none;
     height: 99999px;
 }
 
+.second_level_ #watermark .timetracker_column_even,
+.second_level_ #watermark .timetracker_column {
+    border-right: solid 1px #F2F2F2 !important;
+}
+
+#ganttpanel .second_level_ #watermark .bankHoliday {
+border-right: solid 1px #F2D8D8 !important;
+}
+
+
 .calendar-exceptions div.z-grid-body {
     overflow: hidden;
 }