diff --git a/__pycache__/prefix.cpython-310.pyc b/__pycache__/prefix.cpython-310.pyc
new file mode 100644
index 0000000..012e37c
Binary files /dev/null and b/__pycache__/prefix.cpython-310.pyc differ
diff --git a/prefix.py b/prefix.py
index 9619ff0..a6bea2f 100644
--- a/prefix.py
+++ b/prefix.py
@@ -1,16 +1,13 @@
 class PrefixMiddleware(object):
-
-    def __init__(self, app, prefix=''):
+    def __init__(self, app, prefix=""):
         self.app = app
         self.prefix = prefix
 
     def __call__(self, environ, start_response):
-
-        if environ['PATH_INFO'].startswith(self.prefix):
-            environ['PATH_INFO'] = environ['PATH_INFO'][len(self.prefix):]
-            environ['SCRIPT_NAME'] = self.prefix
+        if environ["PATH_INFO"].startswith(self.prefix):
+            environ["PATH_INFO"] = environ["PATH_INFO"][len(self.prefix) :]
+            environ["SCRIPT_NAME"] = self.prefix
             return self.app(environ, start_response)
         else:
-            start_response('404', [('Content-Type', 'text/plain')])
+            start_response("404", [("Content-Type", "text/plain")])
             return ["This url does not belong to the app.".encode()]
-
diff --git a/readme.py b/readme.py
index d23cc99..d7e0327 100644
--- a/readme.py
+++ b/readme.py
@@ -1,11 +1,12 @@
 import os
 import subprocess
-from flask import Flask, render_template, request, send_from_directory
-from prefix import PrefixMiddleware
+
+import yaml
 from dotenv import load_dotenv
+from flask import Flask, render_template, request, send_from_directory
 from markdown import markdown
-import yaml
 
+from prefix import PrefixMiddleware
 
 load_dotenv()
 
@@ -15,47 +16,55 @@ PREFIX = os.environ.get("PREFIX", "")
 REPO = os.environ.get("REPO", "https://git.xpub.nl/kamo/thesis.git")
 SERVER_NAME = os.environ.get("SERVER_NAME", "localhost:3000")
 
+
 def pull():
-    print('Retrieving contents')
-    subprocess.call(['sh', 'update.sh', REPO])
+    print("Retrieving contents")
+    subprocess.call(["sh", "update.sh", REPO])
 
-def render():
 
-    with open('index.yaml',"r") as i:
+def render():
+    with open("index.yaml", "r") as i:
         index = yaml.safe_load(i)
 
     entries = []
     for entry in index:
-        with open(os.path.join('contents', entry)) as e:
-            html = markdown(e.read(), extensions=[
-                                         'markdown.extensions.attr_list',
-                                         'markdown.extensions.codehilite',
-                                         'markdown.extensions.fenced_code'
-                                         ])
+        with open(os.path.join("contents", entry)) as e:
+            html = markdown(
+                e.read(),
+                extensions=[
+                    "markdown.extensions.attr_list",
+                    "markdown.extensions.codehilite",
+                    "markdown.extensions.fenced_code",
+                ],
+            )
             entries.append(html)
 
-    with open('index.html', 'w') as r:
+    with open("index.html", "w") as r:
         r.write(render_template("render.html", contents=entries))
 
-    return 'rendered'
+    return "rendered"
+
 
 app = Flask(__name__)
 app.wsgi_app = PrefixMiddleware(app.wsgi_app, prefix=PREFIX)
-app.config['SERVER_NAME'] = SERVER_NAME
+app.config["SERVER_NAME"] = SERVER_NAME
 
 
-pull();
+pull()
 with app.app_context():
-    render();
+    render()
 
-@app.route('/')
+
+@app.route("/")
 def home():
-    return send_from_directory(app.root_path, 'index.html')
+    return send_from_directory(app.root_path, "index.html")
+
 
-@app.route('/update', methods=['GET', 'POST'])
+@app.route("/update", methods=["GET", "POST"])
 def update():
-    if request.method == 'POST':
-        pull();
-    return 'GET method not supported'
+    if request.method == "POST":
+        pull()
+    return "GET method not supported"
+
 
 app.run(port=PORT, debug=DEBUG)
diff --git a/static/style.css b/static/style.css
index 4d11043..753bb05 100644
--- a/static/style.css
+++ b/static/style.css
@@ -11,6 +11,7 @@ html, body {
 .chapter {
     max-width: 80ch;
     margin-inline: auto;
+    padding-inline: 32px;
 }
 
 .chapter + .chapter {