diff --git a/Makefile b/Makefile
index 78d62e5..24c0ae5 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ themeDir=../..
 .PHONY: dev, build, clean
 
 dev:
-	rm -r exampleSite/resources
+	-rm -r exampleSite/resources
 	hugo server -D -s $(source) --themesDir $(themeDir) --disableFastRender
 
 build:
diff --git a/assets/js/style.js b/assets/js/style.js
index 1b1fed8..911b2fb 100644
--- a/assets/js/style.js
+++ b/assets/js/style.js
@@ -1,6 +1,9 @@
-// This file contains some codes to fix style of elements under `.md`
+// fix style of checkboxes in posts.
 document.querySelectorAll('.md ul').forEach(v => {
   if (/<li><input .+>.+<\/li>/.test(v.innerHTML)) {
     v.classList.add('ul-checkbox');
   }
-});
\ No newline at end of file
+});
+
+// use custom font family
+document.querySelector('body').style.setProperty('--global-font-family', '{{ .Site.Params.globalFontFamily }}');
\ No newline at end of file
diff --git a/assets/sass/atom.scss b/assets/sass/atom.scss
index b3ecbfa..238a3e6 100644
--- a/assets/sass/atom.scss
+++ b/assets/sass/atom.scss
@@ -4,6 +4,10 @@
   outline: none;
 }
 
+header nav a {
+  line-height: 1.8;
+}
+
 $unit: 0.25rem;
 $scales: 0, 1, 2, 3, 4, 5, 6, 7, 8, 1.5;
 $screens: (
diff --git a/assets/sass/main.scss b/assets/sass/main.scss
index 86d2b4e..3372df3 100644
--- a/assets/sass/main.scss
+++ b/assets/sass/main.scss
@@ -10,6 +10,8 @@
   --tag: #333;
 
   --w-mobile: 640px;
+
+  --global-font-family: Verdana, Geneva, Tahoma, sans-serif;
 }
 
 html.dark {
@@ -26,7 +28,7 @@ html.dark {
 }
 
 body {
-  font-family: "Helvetica Neue", Helvetica, sans-serif;
+  font-family: var(--global-font-family);
   max-width: var(--w-mobile);
   margin: 3rem auto 0;
   font-size: 16px;
diff --git a/exampleSite/config.toml b/exampleSite/config.toml
index bbf9f84..59e62be 100644
--- a/exampleSite/config.toml
+++ b/exampleSite/config.toml
@@ -1,8 +1,8 @@
 baseURL = "http://h.xjj.pub"
 languageCode = "en-us"
 title = "Hi Folks"
-copyright = "© Copyright notice"
-paginate = 5
+copyright = "© XJJ 2021"
+paginate = 6
 googleAnalytics = ""
 disqusShortname = "hugo-minima"
 
@@ -25,8 +25,8 @@ iam = "I am"
 # The subtitle will be shown after the title of your blog site.
 # e.g. "title - subtitle".
 subtitle = ""
-# Comment decides the comment plugin used on your blog site, 
-# available plugins: disqus, ovo.
+# Comment decides the comment plugin to be used on your blog site, 
+# e.g. disqus, ovo.
 comment = "disqus"
 # timeformat 
 timeformat = "Jan 2, 2006"
@@ -35,7 +35,10 @@ switch = ["🌚", "🌝"]
 # if true, date of posts will be displayed in the homepage.
 displayDate = true
 # if true, users can select text from your post.
-selectable = false
+selectable = true
+# custom global font. notice:  `globalFontFamily` won't be working
+# on texts in some special positions. e.g. title 
+globalFontFamily = 'Helvatica, sans-serif'
 
 
 # OvO is a comment plugin written by the author of Minima. 
diff --git a/exampleSite/content/chinese.md b/exampleSite/content/chinese.md
new file mode 100644
index 0000000..87a7326
--- /dev/null
+++ b/exampleSite/content/chinese.md
@@ -0,0 +1,16 @@
+---
+author: XJJ
+title: 中文测试
+date: 2021-07-17T10:52:59+08:00
+description: 
+---
+
+## 二级标题
+
+这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文
+
+### 三级标题
+
+这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文这是测试正文
+
+#### 四级标题
\ No newline at end of file
diff --git a/images/screenshot-dark.png b/images/screenshot-dark.png
index 2500d90..a4fc88e 100644
Binary files a/images/screenshot-dark.png and b/images/screenshot-dark.png differ
diff --git a/images/screenshot.png b/images/screenshot.png
index d9013c5..299c097 100644
Binary files a/images/screenshot.png and b/images/screenshot.png differ
diff --git a/images/tn.png b/images/tn.png
index 29d318e..c4a1982 100644
Binary files a/images/tn.png and b/images/tn.png differ