diff --git a/revealjs/_templates/index.html.j2 b/revealjs/_templates/index.html.j2
index f29d270..d220ffb 100644
--- a/revealjs/_templates/index.html.j2
+++ b/revealjs/_templates/index.html.j2
@@ -37,6 +37,7 @@
         height: {{ height }},
 
         transition: '{{ transition }}',
+        backgroundTransition: '{{ background_transition }}',
 
         //math: {
         //  mathjax: '../_assets/MathJax/unpacked/MathJax.js',
diff --git a/revealjs/build.py b/revealjs/build.py
index 4651d64..6d89ea0 100755
--- a/revealjs/build.py
+++ b/revealjs/build.py
@@ -40,6 +40,7 @@ config = {
     'width': 1280,
     'height': 800,
     'transition': 'none', # none, fade, slide, convex, concave, zoom
+    'background_transition': 'none'
 }
 content = ""