diff --git a/README.md b/README.md
index cf95dea..6ebf09e 100644
--- a/README.md
+++ b/README.md
@@ -18,12 +18,13 @@ However I dislike using a script for adding entries and just want to add entries
     - [x] Links to scrolling blog page
 - [x] RSS feed
 - [ ] Better navigation
-    - [ ] Header
+    - [x] Header
     - [ ] Footer
-- [ ] Switchable CSS
-    - [ ] CSS dark-theme
-    - [ ] CSS light-theme
+- [x] Switchable CSS
+    - [x] CSS dark-theme
+    - [x] CSS light-theme
 - [x] Docker installation
+    - [ ] include config.py
 
 ## Usage
 
diff --git a/src/app.py b/src/app.py
index f2fb624..0bd6704 100644
--- a/src/app.py
+++ b/src/app.py
@@ -1,6 +1,7 @@
 from flask import Flask, flash, make_response, render_template, request, redirect, abort
 
 import content as con_gen
+import config
 
 
 app = Flask(__name__)
@@ -8,27 +9,28 @@ app = Flask(__name__)
 
 @app.errorhandler(404)
 def page_not_found(e):
-    return render_template('error.html', title='Error 404', errorcode='404'), 404
+    return render_template('error.html', title=config.TITLE, errorcode='404', style=config.STYLE), 404
 
 
 @app.route('/')
 @app.route('/index.html')
 def index():
     content = con_gen.gen_index_string()
-    return render_template('index.html', title='Blog', content_string=content)
+    return render_template('index.html', title=config.TITLE, content_string=content, style=config.STYLE)
 
 
 @app.route('/archive')
 @app.route('/archive.html')
 def blog_archive():
     content = con_gen.gen_arch_string()
-    return render_template('archive.html', title='Blog Archive', content_string=content)
+    return render_template('archive.html', title=config.TITLE, content_string=content, style=config.STYLE)
+
 
 @app.route('/entry/<path>')
 def entry(path):
     content = con_gen.gen_stand_string(path)
     if content != '':
-        return render_template('standalone.html', title='Blog Entry', content_string=content)
+        return render_template('standalone.html', title=config.TITLE, content_string=content, style=config.STYLE)
     abort(404)
 
 
@@ -36,7 +38,8 @@ def entry(path):
 @app.route('/rss.xml')
 def feed():
     content = con_gen.get_rss_string()
-    rss_xml = render_template('rss.xml', content_string=content)
+    rss_xml = render_template('rss.xml', content_string=content, title=config.TITLE,
+                              description=config.DESCRIPTION, website=config.WEBSITE)
     response = make_response(rss_xml)
     response.headers['Content-Type'] = 'application/rss+xml'
     return response
diff --git a/src/config.py b/src/config.py
new file mode 100644
index 0000000..92af2da
--- /dev/null
+++ b/src/config.py
@@ -0,0 +1,11 @@
+# Name/title of your blog
+TITLE = 'Tiyny-Blog'
+
+# Description for RSS of your blog
+DESCRIPTION = 'This is your personal Tiyny-Blog.'
+
+# URL for your website: e.g. https://domain.tld
+WEBSITE = 'localhost:5000'
+
+# Theme for the blog: dark, light
+STYLE = 'dark'
diff --git a/src/content.py b/src/content.py
index 86752e3..e85fbae 100644
--- a/src/content.py
+++ b/src/content.py
@@ -5,7 +5,7 @@ import os
 from os import path
 import pathlib
 
-WEBSITE = 'localhost:5000'
+import config
 
 ENTRY_DIR = 'templates/entry'
 
@@ -36,7 +36,7 @@ def gen_arch_string():
                 filename = filename.split('.', 1)[0]
             content_string += '<li>'
             content_string += curr_date + ' - '
-            content_string +=  title + ' ['
+            content_string += title + ' ['
             content_string += '<a href="' + '/index.html#' + \
                 filename + '">' + 'link' + '</a> - '
             content_string += '<a href="' + '/entry/' + \
@@ -65,7 +65,8 @@ def gen_index_string():
             content_string += '<div class=\'entry\'>\n'
             content_string += '<h2 id=\'' + filename + '\'>' + title + '</h2>\n'
             content_string += '[<a href="' + '/entry/' + \
-                pathlib.PurePath(file).name + '">' + 'standalone' + '</a>]<br>\n'
+                pathlib.PurePath(file).name + '">' + \
+                'standalone' + '</a>]<br>\n'
             if file.endswith('.html'):
                 for line in text:
                     content_string += line
@@ -135,7 +136,8 @@ def get_rss_string():
                 filename = filename.split('.', 1)[0]
             content_string += '<item>\n'
             content_string += '<title>' + title + '</title>\n'
-            content_string += '<guid>' + '/index.html#' + filename + '</guid>\n'
+            content_string += '<guid>' + config.WEBSITE + \
+                '/index.html#' + filename + '</guid>\n'
             content_string += '<pubDate>' + \
                 datetime.fromtimestamp(os.path.getctime(file)).strftime(
                     '%Y-%m-%d') + '</pubDate>\n'
diff --git a/src/static/css/blog.css b/src/static/css/dark.css
similarity index 54%
rename from src/static/css/blog.css
rename to src/static/css/dark.css
index be9377e..75a2a05 100644
--- a/src/static/css/blog.css
+++ b/src/static/css/dark.css
@@ -1,6 +1,8 @@
+@import 'style.css';
+
 :root {
     --bg0: rgb(29,32,33);
-    --color0: rgb(0,0,0);
+    --color0: rgb(220,120,0);
     --error: rgb(255,0,0);
     --footerbg0: rgb(29,32,33);
     --link0: rgb(220, 120, 0);
@@ -10,36 +12,24 @@
     --menubg0: rgb(29,32,33);
     --text0: rgb(235,219,178);
     --text1: rgb(220, 120, 0);
-    --transtime: 0.7s;
-}
-
-* {
-    margin: 0;
-    padding: 0;
 }
 
 a {
     color: var(--link0);
-    text-decoration: none;
     transition: var(--transtime);
 }
 
 a:hover {
     color: var(--link1);
-    cursor: pointer;
 }
 
 body {
     background: var(--bg0);
-    margin: 0;
 }
 
-body,
-html {
-    font-family: sans-serif;
-    height: 100%;
-    max-width: 100%;
-    overflow-x: hidden;
+footer {
+    background: var(--footerbg0);
+    color: var(--text0);
 }
 
 span {
@@ -48,11 +38,6 @@ span {
 
 .container {
     color: var(--text0);
-    min-height: 100%;
-    padding-bottom: 50px;
-    padding-left: 10%;
-	padding-right: 10%;
-    padding-top: 5%;
 }
 
 .container h1,
@@ -60,17 +45,39 @@ span {
     color: var(--text1);
 }
 
+.container .flash {
+    background-color: var(--error);
+}
+
+.hide-menu:hover,
+.main-menu a:hover,
+.show-menu:hover {
+    color: var(--menulink1);
+}
+
+.main-menu a {
+    color: var(--menulink0);
+}
+
+.main-menu-dropdown {
+    background: var(--menubg0);
+    color: var(--menulink0);
+}
+
+@media screen and (max-width:800px) {
+
+    .main-menu {
+        background: var(--menubg0);
+    }
+}
+
 .entry {
-	background: var(--blogbg0);
-	border-left: 10px solid var(--blogclr0);
-	border-radius: 0 10px 30px 0;
+    background: var(--bg0);
+    border-left: 10px solid var(--color0);
     color: var(--text0);
-	margin-bottom: 20px;
-	padding: 10px;
 }
 
 .entry h1,
 .entry h2 {
     color: var(--text1);
-    margin: 5px auto 2px auto;
 }
diff --git a/src/static/css/light.css b/src/static/css/light.css
new file mode 100644
index 0000000..ce6379d
--- /dev/null
+++ b/src/static/css/light.css
@@ -0,0 +1,83 @@
+@import 'style.css';
+
+:root {
+    --bg0: rgb(255,255,255);
+    --color0: rgb(0,0,120);
+    --error: rgb(255,0,0);
+    --footerbg0: rgb(192,192,192);
+    --link0: rgb(0,0,120);
+    --link1: rgb(255,255,255);
+    --menulink0: rgb(0,0,120);
+    --menulink1: rgb(255,255,255);
+    --menubg0: rgb(192,192,192);
+    --text0: rgb(0,0,0);
+    --text1: rgb(0,0,120);
+}
+
+a {
+    color: var(--link0);
+    transition: var(--transtime);
+}
+
+a:hover {
+    color: var(--link1);
+}
+
+body {
+    background: var(--bg0);
+}
+
+footer {
+    background: var(--footerbg0);
+    color: var(--text0);
+}
+
+span {
+    color: var(--text1);
+}
+
+.container {
+    color: var(--text0);
+}
+
+.container h1,
+.container h2 {
+    color: var(--text1);
+}
+
+.container .flash {
+    background-color: var(--error);
+}
+
+.hide-menu:hover,
+.main-menu a:hover,
+.show-menu:hover {
+    color: var(--menulink1);
+}
+
+.main-menu a {
+    color: var(--menulink0);
+}
+
+.main-menu-dropdown {
+    background: var(--menubg0);
+    color: var(--menulink0);
+}
+
+@media screen and (max-width:800px) {
+
+    .main-menu {
+        background: var(--menubg0);
+    }
+}
+
+.entry {
+    background: var(--bg0);
+    border-left: 10px solid var(--color0);
+    color: var(--text0);
+}
+
+.entry h1,
+.entry h2 {
+    color: var(--text1);
+}
diff --git a/src/static/css/style.css b/src/static/css/style.css
index 92ff3e3..1d1a16d 100644
--- a/src/static/css/style.css
+++ b/src/static/css/style.css
@@ -1 +1,169 @@
-@import "blog.css";
+:root {
+    --error: rgb(255,0,0);
+    --transtime: 0.7s;
+}
+
+* {
+    margin: 0;
+    padding: 0;
+}
+
+a {
+    text-decoration: none;
+    transition: var(--transtime);
+}
+
+a:hover {
+    cursor: pointer;
+}
+
+body {
+    margin: 0;
+}
+
+body,
+html {
+    font-family: sans-serif;
+    height: 100%;
+    max-width: 100%;
+    overflow-x: hidden;
+}
+
+footer {
+    height: 100px;
+    padding-top: 20px;
+}
+
+footer .center {
+    text-align: center;
+}
+
+.container {
+    min-height: 100%;
+    padding-bottom: 50px;
+    padding-left: 10%;
+    padding-right: 10%;
+    padding-top: 5%;
+}
+
+.container .flash {
+    padding: 10px;
+    width: 400px;
+}
+
+.hide-menu,
+.show-menu {
+    cursor: pointer;
+    display: none;
+    font-size: 30px;
+    transition: var(--transtime);
+}
+
+.important {
+    font-size: xx-large;
+    padding-left: 25vw;
+    padding-right: 25vw;
+    padding-top: 30vh;
+    text-align: left;
+}
+
+.important span {
+    font-weight: bold;
+}
+
+.logo {
+    height: 80px;
+    padding-top: 10px;
+}
+
+.main-menu-dropdown span {
+    float: left;
+    font-family: monospace;
+    font-size: 30px;
+    font-weight: bold;
+    line-height: 100px;
+    padding: 0 10px;
+    text-decoration: none;
+    text-transform: uppercase;
+    transition: 0.7s;
+}
+
+.main-menu {
+    float: right;
+    font-family: monospace;
+    font-size: 30px;
+    font-weight: bold;
+    line-height: 100px;
+}
+
+.main-menu a {
+    padding: 0 10px;
+    text-decoration: none;
+    text-transform: uppercase;
+    transition: 0.7s;
+}
+
+.main-menu-dropdown {
+    height: 100px;
+    padding: 0 20px;
+}
+
+.show-menu {
+    float: right;
+    line-height: 100px;
+}
+
+#main-menu-check {
+    position: absolute;
+    visibility: hidden;
+    z-index: -1111;
+}
+
+@media screen and (max-width:800px) {
+    .hide-menu {
+        position: absolute;
+        right: 40px;
+        top: 40px;
+    }
+
+    .hide-menu,
+    .show-menu {
+        display: block;
+    }
+
+    .main-menu {
+        height: 100vh;
+        line-height: normal;
+        padding: 80px 0;
+        position: fixed;
+        right: -100%;
+        text-align: center;
+        top: 0;
+        transition: var(--transtime);
+        width: 100%;
+    }
+    .main-menu a {
+        display: block;
+        padding: 20px;
+    }
+
+    #main-menu-check:checked ~ .main-menu {
+        right: 0;
+    }
+}
+
+.entry {
+    border-radius: 0 10px 30px 0;
+    margin-bottom: 20px;
+    padding: 10px;
+}
+
+.entry h1,
+.entry h2 {
+    margin: 5px auto 2px auto;
+}
+
+.entry ul {
+    padding-left: 20;
+}
+
diff --git a/src/static/images/logo.png b/src/static/images/logo.png
new file mode 100644
index 0000000..e69de29
diff --git a/src/templates/archive.html b/src/templates/archive.html
index e1ae910..4b9de72 100644
--- a/src/templates/archive.html
+++ b/src/templates/archive.html
@@ -2,7 +2,7 @@
 {% block content %}
 <div class="container">
     <div class="blogarchive">
-		<h1>Blog-Archive</h1><br>
+	<h1>Archive</h1><br>
         {% autoescape off %}
         {{ content_string }}
         {% endautoescape %}
diff --git a/src/templates/error.html b/src/templates/error.html
index 5baa36f..84571ce 100644
--- a/src/templates/error.html
+++ b/src/templates/error.html
@@ -3,7 +3,7 @@
 <div class="container">
     <div class="important">
         Error<br>
-		<span>{{ errorcode }}</span>
+	<span>{{ errorcode }}</span>
     </div>
 </div>
 {% endblock %}
diff --git a/src/templates/index.html b/src/templates/index.html
index 23c340c..db050ab 100644
--- a/src/templates/index.html
+++ b/src/templates/index.html
@@ -2,11 +2,7 @@
 {% block content %}
 <div class="container">
     <div class="blog">
-        <h1>Blog-Index</h1><br>
-	<p>
-	    <a href="archive">Archive</a><br>
-            <a href="feed.xml">RSS</a>
-        </p>
+        <h1>Index</h1><br>
         {% autoescape off %}
         {{ content_string }}
         {% endautoescape %}
diff --git a/src/templates/rss.xml b/src/templates/rss.xml
index a4936cc..9f8b6b1 100644
--- a/src/templates/rss.xml
+++ b/src/templates/rss.xml
@@ -2,10 +2,10 @@
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
 
 <channel>
-    <title>Blog Title</title>
-    <description>A short description of the blog.</description>
+    <title>{{ title }}</title>
+    <description>{{ description }}</description>
 <language>en-us</language>
-<link>localhost:5000/feed.xml</link>
+<link>{{ website }}/feed.xml</link>
 <atom:link href="/feed.xml" rel="self" type="application/rss+xml" />
 
 {% autoescape off %}
diff --git a/src/templates/template.html b/src/templates/template.html
index 4e82b92..3258c41 100644
--- a/src/templates/template.html
+++ b/src/templates/template.html
@@ -1,11 +1,24 @@
 <html>
 <head>
     <title>{{ title }}</title>
-    <link href="{{ url_for('static', filename='css/style.css') }}" rel="stylesheet" type="text/css">
+    <link href="{{ url_for('static', filename='css/' + style + '.css') }}" rel="stylesheet" type="text/css">
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width", initial-scale=1.0>
 </head>
 <body>
+    <!-- Menu -->
+    <div class="main-menu-dropdown">
+        <!-- <img class="logo" src="/static/images/logo.png"> -->
+        <span>{{ title }}</span>
+        <input type="checkbox" id="main-menu-check">
+        <label for="main-menu-check" class="show-menu">&#9776;</label>
+        <div class="main-menu">
+            <a href="/">Blog</a>
+            <a href="/archive">Archive</a>
+            <label for="main-menu-check" class="hide-menu">X</label>
+        </div>
+    </div>
+    <!-- Menu -->
     <!-- Content -->
 	{% block content %}
 	{% endblock %}