diff --git a/.revealjs/ntn.css b/.revealjs/ntn.css
index d2be27a..dada85f 100644
--- a/.revealjs/ntn.css
+++ b/.revealjs/ntn.css
@@ -13,7 +13,8 @@ section.has-light-background, section.has-light-background h1, section.has-light
  *********************************************/
 body {
   background: #222;
-  background-color: #222; }
+  background-color: #222;
+  background-image: linear-gradient(black, purple);}  /* ntnsndr added */
 
 .reveal {
   font-family: "Dinreg", "CMU Bright", "Source Sans Pro", Helvetica, sans-serif; /* ntnsndr adjusted */