remove tailwindcss dependency

tutorials/http/device-dashboard/Makefile

@@ -3,7 +3,6 @@ DELETE = rm -rf         # Command to remove files
 OUT ?= -o $(PROG)       # Compiler argument for output file
 SOURCES = main.c mongoose.c net.c packed_fs.c   # Source code files
 CFLAGS = -W -Wall -Wextra -g -I.                # Build options
-NPX ?= npx
 
 # Mongoose build options. See https://mongoose.ws/documentation/#build-options
 CFLAGS_MONGOOSE += -DMG_ENABLE_PACKED_FS=1
@@ -27,12 +26,8 @@ $(PROG): $(SOURCES)
 web_root/bundle.js:
 	curl -s https://npm.reversehttp.com/preact,preact/hooks,htm/preact,preact-router -o $@
 
-# Create optimised CSS. Prerequisite: npm -g i tailwindcss tailwindcss-font-inter
-web_root/main.css: web_root/index.html $(wildcard web_root/*.js)
-	$(NPX) tailwindcss -o $@ --minify
-
 # Generate packed filesystem for serving Web UI
-packed_fs.c: $(wildcard web_root/*) $(wildcard certs/*) Makefile web_root/main.css web_root/bundle.js
+packed_fs.c: $(wildcard web_root/*) $(wildcard certs/*) Makefile web_root/bundle.js
 	node pack.js $(addsuffix ::gzip, $(wildcard web_root/*)) certs/* > $@
 
 mbedtls: