diff --git a/css/main.css b/css/main.css
index d37ed08..059c769 100644
--- a/css/main.css
+++ b/css/main.css
@@ -715,7 +715,7 @@ td.gutter {
 }
 
 /* --- Notification boxes --- */
-.box-note, .box-warning, .box-error {
+.box-note, .box-warning, .box-error, .box-success {
   padding: 15px 15px 15px 10px;
   margin: 20px 20px 20px 5px;
   border: 1px solid #eee;
@@ -738,6 +738,11 @@ td.gutter {
   border-left-color: #c0392b;
 }
 
+.box-success {
+  background-color: #98FB98;
+  border-left-color: #3CB371;
+}
+
 /* Fix table border github gist snippets */
 
 .gist, .gist-file table tr {