diff --git a/R/revealjs_presentation.R b/R/revealjs_presentation.R
index 178a08c..47f4073 100644
--- a/R/revealjs_presentation.R
+++ b/R/revealjs_presentation.R
@@ -138,8 +138,8 @@
                                   fig_height = 6,
                                   fig_retina = if (!fig_caption) 2,
                                   fig_caption = FALSE,
-                                  self_contained = TRUE,
-                                  theme = "simple",
+                                  self_contained = FALSE,
+                                  theme = "ids",
                                   transition = "convex",
                                   background_transition = "fade",
                                   reveal_options = NULL,
diff --git a/examples/ids.Rmd b/examples/ids.Rmd
index 6e1a2a1..53c280d 100644
--- a/examples/ids.Rmd
+++ b/examples/ids.Rmd
@@ -6,9 +6,6 @@
 date: "Mannheim, 2023-10-08"
 output: 
   revealjs::revealjs_presentation:
-    theme: ids
-    highlight: pygments
-    self_contained: false
     reveal_plugins: 
       - search
       - zoom
@@ -16,7 +13,6 @@
       - chalkboard
       - menu
     reveal_options:
-      slideNumber: true
       chalkboard:
         theme: chalkboard
         toggleNotesButton: true