diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index aa81012097bc5634789f0c4ba4305984586a53a6..c087574330c8bc64f59b9a970ef24d01be89e89b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,8 @@
 image: omalaspinas/pandoc_website:latest
 
+variables:
+  GIT_SUBMODULE_STRATEGY: recursive
+  
 before_script:
    ##
    ## Run ssh-agent (inside the build environment)
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000000000000000000000000000000000000..822f448577fd54bc1a81827516065bc405f49fb7
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "css/tufte-css"]
+	path = css/tufte-css
+	url = https://github.com/edwardtufte/tufte-css.git
diff --git a/Makefile b/Makefile
index 6128db4412828120d0f151e0d754531f0ea010b8..da2c801f442c7bd0f32a674a231d54d579739b4b 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ STYLES := css/tufte-css/tufte.css \
 all: index.html
 
 index.html: index.md Makefile
-	pandoc -o $@ $< -t html5 -c css/styling.css --self-contained
+	pandoc -o $@ $< -t html5 -c css/tufte-css/tufte.css --self-contained
 
 deploy: all
 	mkdir -p site
diff --git a/css/tufte-css b/css/tufte-css
new file mode 160000
index 0000000000000000000000000000000000000000..c414b9117d5b39bdb747a172822333fc1043aee3
--- /dev/null
+++ b/css/tufte-css
@@ -0,0 +1 @@
+Subproject commit c414b9117d5b39bdb747a172822333fc1043aee3