Use fade transition style, less motion.

fuzzbomb · fuzzbomb · commit b487f0221d8d · 2016-04-30T19:16:29.000+01:00
diff --git a/index.html b/index.html
@@ -620,7 +620,7 @@ <h2>Any Questions?</h2>
 				history: true,
 				center: true,
 
-				transition: 'slide', // none/fade/slide/convex/concave/zoom
+				transition: 'fade', // none/fade/slide/convex/concave/zoom
 
 				// Optional reveal.js plugins
 				dependencies: [
