diff --git a/go.mod b/go.mod
index 4e61d2c7..cc888d97 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.17
 require (
 	github.com/PuerkitoBio/goquery v1.8.0
 	github.com/avelino/slugify v0.0.0-20180501145920-855f152bd774
+	github.com/otiai10/copy v1.9.0
 	github.com/yuin/goldmark v1.4.13
 	golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8
 )
diff --git a/go.sum b/go.sum
index 4565a4b5..8c0ebb96 100644
--- a/go.sum
+++ b/go.sum
@@ -109,6 +109,13 @@ github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+o
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/otiai10/copy v1.9.0 h1:7KFNiCgZ91Ru4qW4CWPf/7jqtxLagGRmIxWldPP9VY4=
+github.com/otiai10/copy v1.9.0/go.mod h1:hsfX19wcn0UWIHUQ3/4fHuehhk2UyArQ9dVFAn3FczI=
+github.com/otiai10/curr v0.0.0-20150429015615-9b4961190c95/go.mod h1:9qAhocn7zKJG+0mI8eUu6xqkFDYS2kb2saOteoSB3cE=
+github.com/otiai10/curr v1.0.0/go.mod h1:LskTG5wDwr8Rs+nNQ+1LlxRjAtTZZjtJW4rMXl6j4vs=
+github.com/otiai10/mint v1.3.0/go.mod h1:F5AjcsTsWUqX+Na9fpHb52P8pcRX2CI6A3ctIT91xUo=
+github.com/otiai10/mint v1.4.0 h1:umwcf7gbpEwf7WFzqmWwSv0CzbeMsae2u9ZvpP8j2q4=
+github.com/otiai10/mint v1.4.0/go.mod h1:gifjb2MYOoULtKLqUAEILUG/9KONW6f7YsJ6vQLTlFI=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
diff --git a/main.go b/main.go
index 6c269b42..5c0bf81a 100644
--- a/main.go
+++ b/main.go
@@ -3,6 +3,7 @@ package main
 import (
 	"bytes"
 	"fmt"
+	cp "github.com/otiai10/copy"
 	"os"
 	"path/filepath"
 	"strings"
@@ -27,15 +28,21 @@ type Object struct {
 
 // Source
 const readmePath = "README.md"
+const assetsDir = "tmpl/assets"
 
 // Templates
+const tplPath = "tmpl/tmpl.html"
 const tmplCategory = "tmpl/cat-tmpl.html"
 const tmplSitemap = "tmpl/sitemap-tmpl.xml"
 
 // Output
+
+// NOTE: trailing slash is required
 const outDir = "out/"
-const outIndexFile = "index.html"
-const outSitemapFile = "sitemap.xml"
+
+var outAssetsDir = filepath.Join(outDir, "assets")
+var outIndexFile = filepath.Join(outDir, "index.html")
+var outSitemapFile = filepath.Join(outDir, "sitemap.xml")
 
 func main() {
 	outIndexAbs := filepath.Join(outDir, outIndexFile)
@@ -44,7 +51,7 @@ func main() {
 		panic(err)
 	}
 
-	input, err := os.ReadFile(outIndexAbs)
+	input, err := os.ReadFile(outIndexFile)
 	if err != nil {
 		panic(err)
 	}
@@ -77,6 +84,10 @@ func main() {
 	changeLinksInIndex(string(input), query, objs)
 
 	makeSitemap(objs)
+
+	if err := cp.Copy(assetsDir, outAssetsDir); err != nil {
+		panic(err)
+	}
 }
 
 func mkdirAll(path string) error {
@@ -101,15 +112,15 @@ func mkdirAll(path string) error {
 
 func makeSiteStruct(objs map[string]*Object) error {
 	for _, obj := range objs {
-		outDir := filepath.Join(outDir, obj.Slug)
-		if err := mkdirAll(outDir); err != nil {
+		categoryDir := filepath.Join(outDir, obj.Slug)
+		if err := mkdirAll(categoryDir); err != nil {
 			return err
 		}
 
 		// FIXME: embed templates
 		// FIXME: parse templates once at start
 		t := template.Must(template.ParseFiles(tmplCategory))
-		f, err := os.Create(filepath.Join(outDir, "index.html"))
+		f, err := os.Create(filepath.Join(categoryDir, "index.html"))
 		if err != nil {
 			return err
 		}
@@ -124,7 +135,7 @@ func makeSiteStruct(objs map[string]*Object) error {
 
 func makeSitemap(objs map[string]*Object) {
 	t := template.Must(template.ParseFiles(tmplSitemap))
-	f, _ := os.Create(filepath.Join(outDir, outSitemapFile))
+	f, _ := os.Create(outSitemapFile)
 	t.Execute(f, objs)
 }
 
@@ -176,5 +187,5 @@ func changeLinksInIndex(html string, query *goquery.Document, objs map[string]*O
 		}
 	})
 
-	os.WriteFile(filepath.Join(outDir, outIndexFile), []byte(html), 0644)
+	os.WriteFile(outIndexFile, []byte(html), 0644)
 }
diff --git a/main_test.go b/main_test.go
index 18184ca2..6e3a8ebd 100644
--- a/main_test.go
+++ b/main_test.go
@@ -69,6 +69,7 @@ func TestSeparator(t *testing.T) {
 		}
 	}
 }
+
 func TestGenerateHTML(t *testing.T) {
 	err := GenerateHTML(readmePath, outIndexFile)
 	if err != nil {
diff --git a/scripts.go b/scripts.go
index 072e60c2..dc973511 100644
--- a/scripts.go
+++ b/scripts.go
@@ -37,9 +37,6 @@ type content struct {
 
 // GenerateHTML generate site html (index.html) from markdown file
 func GenerateHTML(srcFilename, outFilename string) error {
-	// options
-	const tplPath = "tmpl/tmpl.html"
-
 	input, err := ioutil.ReadFile(srcFilename)
 	if err != nil {
 		return err