Add comment on custom CSS

note_kfet/templates/base.html

@@ -74,6 +74,8 @@ SPDX-License-Identifier: GPL-3.0-or-later
         .bs-tooltip-bottom .arrow::before {
             border-bottom-color: rgba(0,0,0,.250);
         }
+
+        /* Limit fluid container to a max size */
         .container-fluid {
             max-width: 1600px;
         }