diff --git a/doc/htdocs/css/style.css b/doc/htdocs/css/style.css
index 98022533..fe62cea5 100644
--- a/doc/htdocs/css/style.css
+++ b/doc/htdocs/css/style.css
@@ -225,3 +225,33 @@ ul#actions li a:hover {
 #the-configuration-file dt {
     font-weight: 700;
 }
+
+.note {
+    padding:.6em .6em .6em 80px;
+    border:1px solid #489848;
+    background:#FFFFDD;
+    margin-bottom:3.5em;
+    /*font-size:.95em;*/
+    position:relative;
+}
+
+.note p.admonition-title:before {
+    content:"!";
+    font-size:60px;
+    font-weight:bold;
+    color:#489848;
+    font-family:helvetica,arial;
+    position:absolute;
+    left:30px;
+}
+
+.note p.admonition-title {
+    font-weight:700;
+    padding:0;
+    margin:0 0 4px 0;
+}
+
+.note p.last {
+    padding:0;
+    margin:0;
+}