diff --git a/Makefile b/Makefile
index 5c0f55b..0d51f53 100644
--- a/Makefile
+++ b/Makefile
@@ -6,14 +6,20 @@ LANG := $(firstword $(LANG))
 
 .PHONY: resources
 
-all:
+all: html resources
+
+css:
 	scss resources/pinout.scss > resources/pinout.scss.css
+
+html:
 	./generate-html.py $(LANG)
-	cp -r resources output/$(LANG)/
 
 resources:
 	cp -r resources output/$(LANG)/
 
+devel: css all resources
+	./serve.py ${LANG}
+
 clean:
 	rm -rf output/$(LANG)/*