diff --git a/convert.sh b/convert.sh
index 805446f..07c8536 100755
--- a/convert.sh
+++ b/convert.sh
@@ -62,7 +62,6 @@ wait
 mkdir -p ./_site/css
 mkdir -p ./_site/js
 mkdir -p ./_site/fonts
-cp ./css/base.css ./_site/css/base.css
-cp ./js/main.js ./_site/js/main.js
-cp ./favicon.ico ./_site/favicon.ico
+sed -e "s:{{SITE_ROOT}}:$SITE_ROOT:g" ./css/base.css > ./_site/css/base.css
+sed -e "s:{{SITE_ROOT}}:$SITE_ROOT:g" ./js/main.js > ./_site/js/main.js
 cp ./fonts/* ./_site/fonts/ || true
diff --git a/env b/env
index 0cea882..1bf87fd 100644
--- a/env
+++ b/env
@@ -1,3 +1,5 @@
-export SITE_ROOT="/simple-site"
-export SITE_TITLE="Simple Site"
-export CRUMBS="YES"
+[ -z "$SITE_ROOT" ] && export SITE_ROOT="/simple-site"
+[ -z "$SITE_TITLE" ] && export SITE_TITLE="Simple Site"
+[ -z "$CRUMBS" ] && export CRUMBS="YES"
+
+[ "$SITE_ROOT" = "/" ] && export SITE_ROOT=""