added notes

assets/css/main.css

@@ -8719,4 +8719,22 @@ input, select, textarea {
 	  display: block;
 	  text-align: left;
 	}
+  }
+
+  .danger {
+	background-color: #ffdddd;
+	border-left: 6px solid #f44336;
+	margin-bottom: 15px;
+	padding: 4px 12px;
+  }
+  .warning {
+	background-color: #ffffcc;
+	border-left: 6px solid #ffeb3b;
+	padding: 4px 12px;
+  }
+  .info {
+	background-color: #e7f3fe;
+	border-left: 6px solid #2196F3;
+	margin-bottom: 15px;
+	padding: 4px 12px;
   }