diff --git a/css/theme/template/theme.scss b/css/theme/template/theme.scss
index 9cf0511..98d9f11 100644
--- a/css/theme/template/theme.scss
+++ b/css/theme/template/theme.scss
@@ -185,6 +185,7 @@
 .reveal code {
 	font-family: $codeFont;
 	text-transform: none;
+	tab-size: 2;
 }
 
 .reveal pre code {
diff --git a/dist/theme/beige.css b/dist/theme/beige.css
index 4cdd397..688dec2 100644
--- a/dist/theme/beige.css
+++ b/dist/theme/beige.css
@@ -194,7 +194,8 @@ section.has-dark-background, section.has-dark-background h1, section.has-dark-ba
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/black.css b/dist/theme/black.css
index dcde9de..8df28fe 100644
--- a/dist/theme/black.css
+++ b/dist/theme/black.css
@@ -187,7 +187,8 @@ section.has-light-background, section.has-light-background h1, section.has-light
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/blood.css b/dist/theme/blood.css
index 9062842..444d516 100644
--- a/dist/theme/blood.css
+++ b/dist/theme/blood.css
@@ -193,7 +193,8 @@ section.has-light-background, section.has-light-background h1, section.has-light
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/league.css b/dist/theme/league.css
index e21024b..2a8a10e 100644
--- a/dist/theme/league.css
+++ b/dist/theme/league.css
@@ -196,7 +196,8 @@ section.has-light-background, section.has-light-background h1, section.has-light
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/moon.css b/dist/theme/moon.css
index 3852595..a8cef5c 100644
--- a/dist/theme/moon.css
+++ b/dist/theme/moon.css
@@ -194,7 +194,8 @@ section.has-light-background, section.has-light-background h1, section.has-light
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/night.css b/dist/theme/night.css
index 0abd954..ee1ffad 100644
--- a/dist/theme/night.css
+++ b/dist/theme/night.css
@@ -188,7 +188,8 @@ section.has-light-background, section.has-light-background h1, section.has-light
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/serif.css b/dist/theme/serif.css
index 1744dd1..b9f80d5 100644
--- a/dist/theme/serif.css
+++ b/dist/theme/serif.css
@@ -190,7 +190,8 @@ section.has-dark-background, section.has-dark-background h1, section.has-dark-ba
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/simple.css b/dist/theme/simple.css
index ff3e063..85f4a99 100644
--- a/dist/theme/simple.css
+++ b/dist/theme/simple.css
@@ -190,7 +190,8 @@ section.has-dark-background, section.has-dark-background h1, section.has-dark-ba
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/sky.css b/dist/theme/sky.css
index ab9a40c..ba996b3 100644
--- a/dist/theme/sky.css
+++ b/dist/theme/sky.css
@@ -197,7 +197,8 @@ section.has-dark-background, section.has-dark-background h1, section.has-dark-ba
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/solarized.css b/dist/theme/solarized.css
index a690537..28d86c5 100644
--- a/dist/theme/solarized.css
+++ b/dist/theme/solarized.css
@@ -191,7 +191,8 @@ html * {
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;
diff --git a/dist/theme/white.css b/dist/theme/white.css
index e9b1ead..b4cb677 100644
--- a/dist/theme/white.css
+++ b/dist/theme/white.css
@@ -187,7 +187,8 @@ section.has-dark-background, section.has-dark-background h1, section.has-dark-ba
 
 .reveal code {
   font-family: monospace;
-  text-transform: none; }
+  text-transform: none;
+  tab-size: 2; }
 
 .reveal pre code {
   display: block;