diff --git a/build.py b/build.py
index 4ca179b..401f51f 100755
--- a/build.py
+++ b/build.py
@@ -3,36 +3,13 @@
 import os
 import subprocess
 
+import rwx.io
+
 
 def run(*args):
     subprocess.call(args)
 
 
-def link(active:str, id:str, text:str)->str:
-    items = ['<a']
-    if (active == id):
-        items.append(' class="active"')
-    items.append(f' href="#{id}">{text}</a>')
-    return str().join(items)
-
-
-def nav(active:str=None)->str:
-    return f'''\
-<nav>
-{link(active, 'main', 'main')}
-{link(active, 'cv', 'CV')}
-{link(active, 'git', 'Git')}
-{link(active, 'health', 'Health')}
-{link(active, 'id', 'Identity')}
-{link(active, 'lib', 'LinkInBio')}
-{link(active, 'music', 'Music')}
-{link(active, 'pubnix', 'PubNix')}
-{link(active, 'thesis', 'Thesis')}
-{link(active, 'vegan', 'Vegan')}
-{link(active, 'others', 'others…')}
-</nav>
-'''
-
 def main():
     style = 'css'
     script = 'js'