added tufte

.gitlab-ci.yml

 image: omalaspinas/pandoc:latest
 
+variables:
+  GIT_SUBMODULE_STRATEGY: recursive
+
+
 before_script:
    ##
    ## Install ssh-agent if not already installed, it is required by Docker.

.gitmodules

+[submodule "css/tufte-css"]
+	path = css/tufte-css
+	url = https://github.com/edwardtufte/tufte-css.git

Makefile

@@ -7,7 +7,7 @@ PDFOPTIONS += --number-sections
 PDFOPTIONS += --template=./default.latex
 
 HTMLOPTIONS += -t html5
-HTMLOPTIONS += -c css/styling.css
+HTMLOPTIONS += -c css/tufte-css/tufte.css
 HTMLOPTIONS += --self-contained
 
 all: base_2.pdf base_1.pdf intro.pdf index.html

tufte-css @ c414b911

+Subproject commit c414b9117d5b39bdb747a172822333fc1043aee3