Add the same CSS stylesheet as for the user guide. Use dollar entities to

prevent keywort substitution.

docs/lcdproc-dev/Makefile.am

@@ -5,6 +5,7 @@ EXTRA_DIST =	add-your-driver.docbook \
 		driver-api.docbook \
 		introduction.docbook \
 		language.docbook \
+		lcdproc-dev.css \
 		lcdproc-dev.docbook \
 		license.docbook \
 		make-driver.docbook \
@@ -15,13 +16,15 @@ EXTRA_DIST =	add-your-driver.docbook \
 
 
 ## convenience targets
-xmlto = /usr/bin/xmlto
-developerguidedir = $(DESTDIR)$(htmldir)/developer-guide/
+xmlto ?= /usr/bin/xmlto
+developerguidedir ?= $(DESTDIR)$(htmldir)/developer-guide/
 
 .PHONY: install-html-developerguide
 
-install-html-developerguide: $(xmlto) lcdproc-dev.docbook
+install-html-developerguide: $(xmlto) lcdproc-dev.docbook lcdproc-dev.css
 	$(mkinstalldirs) $(developerguidedir)
-	$(xmlto) html -o $(developerguidedir) lcdproc-dev.docbook
+	$(xmlto) html -o $(developerguidedir) \
+	  --stringparam html.stylesheet=lcdproc-dev.css lcdproc-dev.docbook
+	cp lcdproc-dev.css $(developerguidedir)
 
 ## EOF