Index: openacs-4/packages/xowiki/www/resources/xowiki.css
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/xowiki/www/resources/xowiki.css,v
diff -u -r1.64.2.17 -r1.64.2.18
--- openacs-4/packages/xowiki/www/resources/xowiki.css	18 Jan 2021 14:11:28 -0000	1.64.2.17
+++ openacs-4/packages/xowiki/www/resources/xowiki.css	3 Feb 2022 18:26:22 -0000	1.64.2.18
@@ -311,8 +311,8 @@
     display: none;
 }
 
-/* 
- * (Vertical) Reorder box 
+/*
+ * (Vertical) Reorder box
  */
 
 div.reorder_box {
@@ -333,7 +333,7 @@
     color: #aaa;
 }
 
-/* 
+/*
  * Book styling
  */
 div.xowiki-content div.book ul.page_order_region {
@@ -383,7 +383,62 @@
     border-bottom:  solid 4px #428bca;
 }
 
+div.xowiki-content .xowiki-tree,
+div.xowiki-content .xowiki-tree ul {
+  margin:0 0 0 1em; /* indentation */
+  padding:0;
+  list-style:none;
+  color:#369;
+  position:relative;
+}
+div.xowiki-content div.toc ul.xowiki-tree {
+    padding: 0px;
+}
 
+div.xowiki-content .xowiki-tree ul {
+    margin-left:.5em; /* (indentation/2) */
+}
+
+div.xowiki-content .xowiki-tree:before,
+div.xowiki-content .xowiki-tree ul:before {
+  content:"";
+  display:block;
+  width:0;
+  position:absolute;
+  top:0;
+  bottom:0;
+  left:0;
+  border-left:1px solid;
+}
+
+div.xowiki-content .xowiki-tree li {
+  margin:0;
+  padding:0 1.5em;   /* indentation + .5em */
+  line-height:1.5em; /* default list item's `line-height` */
+  /*font-size: smaller;*/
+  position:relative;
+}
+
+div.xowiki-content .xowiki-tree li:before {
+  content:"";
+  display:block;
+  width:10px; /* same with indentation */
+  height:0;
+  border-top:1px solid;
+  margin-top:-1px; /* border top width */
+  position:absolute;
+  top:0.75em; /* (line-height/2) */
+  left:0;
+}
+
+div.xowiki-content .xowiki-tree li:last-child:before {
+  background:white; /* same with body background */
+  height:auto;
+  top:0.75em; /* (line-height/2) */
+  bottom:0;
+}
+
+
 /*
    Handling hidden field-sets: