diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..1fd6ae2
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1739736696,
+        "narHash": "sha256-zON2GNBkzsIyALlOCFiEBcIjI4w38GYOb+P+R4S8Jsw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d74a2335ac9c133d6bbec9fc98d91a77f1604c1f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..5aca172
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,34 @@
+{
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+
+  outputs = {
+    nixpkgs,
+    self,
+  }: let
+    pkgs = nixpkgs;
+
+    mkAllSystems = genAttrs [
+      "aarch64-darwin"
+      "aarch64-linux"
+      "i686-linux"
+      "x86_64-darwin"
+      "x86_64-linux"
+    ];
+
+    inherit (lib) genAttrs;
+    inherit (pkgs) alejandra lib;
+  in {
+    formatter = mkAllSystems (system: alejandra);
+
+    devShells = mkAllSystems (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+
+      inherit (pkgs) mkShell;
+    in {
+      default = mkShell {
+        nativeBuildInputs = [pkgs.hugo];
+        shellHook = "hugo server";
+      };
+    });
+  };
+}
diff --git a/layouts/_default/list.html b/layouts/_default/list.html
index 7d40504..94125af 100644
--- a/layouts/_default/list.html
+++ b/layouts/_default/list.html
@@ -1,16 +1,16 @@
 {{- define "stylesheet" -}}
-    {{- $style := resources.Get "/scss/default.scss" | resources.ToCSS (dict "outputStyle" "compressed") -}}
-    <link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
+{{- $style := resources.Get "/scss/default.scss" | css.Sass (dict "outputStyle" "compressed") -}}
+<link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
 {{- end -}}
 
 {{- define "main" }}
 
-    <main>
-      <h1 class="title">{{ .Title }}</h1>
-      <p>{{ .Content }}</p>
-    {{- range .Pages }}
-      <p> <a href="{{ .Permalink }}">{{ .Title }}</a> <span>{{ .Date | time.Format ":date_long" }}</span> </p>
-    {{- end }}
-    </main>
+<main>
+  <h1 class="title">{{ .Title }}</h1>
+  <p>{{ .Content }}</p>
+  {{- range .Pages }}
+  <p> <a href="{{ .Permalink }}">{{ .Title }}</a> <span>{{ .Date | time.Format ":date_long" }}</span> </p>
+  {{- end }}
+</main>
 
-{{- end }} 
+{{- end }}
\ No newline at end of file
diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index e4c8157..5d330ac 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -1,31 +1,31 @@
 {{- define "stylesheet" -}}
-    {{- $style := resources.Get "/scss/default.scss" | resources.ToCSS (dict "outputStyle" "compressed") -}}
-    <link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
+{{- $style := resources.Get "/scss/default.scss" | css.Sass (dict "outputStyle" "compressed") -}}
+<link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
 {{- end -}}
 
 {{- define "main" }}
-    <main>
-      {{- if eq .Params.type "post" }}
-      <p class="date-published" title="{{ .Date | time.Format "2. January 2006, 15:04 MST" }}">{{ .Date | time.Format "2. January 2006" }}</p>
-      {{- end }}
-      <h1 class="title">{{ .Title }}</h1>
-      {{ .Content -}}
-      <aside>
-      {{- with .Params.topics }}
-        <ul class="topics">
-          {{- range . }}
-          <li>
-            <a href="{{ "topics" | relURL}}/{{ . | urlize }}">{{ . }}</a>
-          </li>
-          {{ end }}
-        </ul>
-      {{- end }}
-      {{- with .Params.tags }}
-        tags
-        {{- range . }}
-        <a href="{{ "tags" | relURL }}/{{ . | urlize }}">{{ . }}</a>
-        {{- end }}
-      {{- end }}
-      </aside>
-    </main>
-{{- end }} 
+<main>
+  {{- if eq .Params.type "post" }}
+  <p class="date-published" title="{{ .Date | time.Format "2. January 2006, 15:04 MST" }}">{{ .Date | time.Format "2. January 2006" }}</p>
+  {{- end }}
+  <h1 class="title">{{ .Title }}</h1>
+  {{ .Content -}}
+  <aside>
+    {{- with .Params.topics }}
+    <ul class="topics">
+      {{- range . }}
+      <li>
+        <a href="{{ "topics" | relURL}}/{{ . | urlize }}">{{ . }}</a>
+      </li>
+      {{ end }}
+    </ul>
+    {{- end }}
+    {{- with .Params.tags }}
+    tags
+    {{- range . }}
+    <a href="{{ "tags" | relURL }}/{{ . | urlize }}">{{ . }}</a>
+    {{- end }}
+    {{- end }}
+  </aside>
+</main>
+{{- end }}
\ No newline at end of file
diff --git a/layouts/blog/list.html b/layouts/blog/list.html
index d111df3..90c3431 100644
--- a/layouts/blog/list.html
+++ b/layouts/blog/list.html
@@ -1,6 +1,6 @@
 {{- define "stylesheet" -}}
-    {{- $style := resources.Get "/scss/blog.scss" | resources.ToCSS (dict "outputStyle" "compressed") -}}
-    <link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
+{{- $style := resources.Get "/scss/blog.scss" | css.Sass (dict "outputStyle" "compressed") -}}
+<link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
 {{- end -}}
 
 {{- define "header" }}
@@ -12,19 +12,19 @@
 
 {{- define "main" }}
 
-    <main>
-        <div id="posts-wrapper">
+<main>
+    <div id="posts-wrapper">
         {{ range (where .Site.RegularPages "Section" "blog") }}
-            <a href="{{ .Permalink }}" class="post-wrapper">
-                <p class="title">{{ .Title }}</p>
-                <aside class="meta" title="{{ .Date | time.Format "2 Jan 2006, 15:04 MST" }}">
-                    <span class="date">{{ .Date | time.Format "2. January 2006" }}</span>
-                    <span class="author">{{ with .Params.author }}by {{ end }}{{ .Params.author }}</span>
-                </aside>
-            </a>
+        <a href="{{ .Permalink }}" class="post-wrapper">
+            <p class="title">{{ .Title }}</p>
+            <aside class="meta" title="{{ .Date | time.Format " 2 Jan 2006, 15:04 MST" }}">
+                <span class="date">{{ .Date | time.Format "2. January 2006" }}</span>
+                <span class="author">{{ with .Params.author }}by {{ end }}{{ .Params.author }}</span>
+            </aside>
+        </a>
         {{ end }}
-        </div>
-        
-    </main>
+    </div>
 
-{{- end }} 
+</main>
+
+{{- end }}
\ No newline at end of file
diff --git a/layouts/blog/single.html b/layouts/blog/single.html
index ec43732..2f2f22b 100644
--- a/layouts/blog/single.html
+++ b/layouts/blog/single.html
@@ -1,5 +1,5 @@
 {{- define "stylesheet" -}}
-{{- $style := resources.Get "/scss/blog.scss" | resources.ToCSS (dict "outputStyle" "compressed") -}}
+{{- $style := resources.Get "/scss/blog.scss" | css.Sass (dict "outputStyle" "compressed") -}}
 <link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
 {{- end -}}
 
diff --git a/layouts/errorpages/list.html b/layouts/errorpages/list.html
index 308c258..126038e 100644
--- a/layouts/errorpages/list.html
+++ b/layouts/errorpages/list.html
@@ -1,11 +1,11 @@
 {{- define "stylesheet" -}}
-    {{- $style := resources.Get "/scss/default.scss" | resources.ToCSS (dict "outputStyle" "compressed") -}}
-    <link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
+{{- $style := resources.Get "/scss/default.scss" | css.Sass (dict "outputStyle" "compressed") -}}
+<link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
 {{- end -}}
 
 {{- define "main" }}
-    <main>
-      <h2>{{ .Params.heading }}</h2>
-      <p>{{ .Params.subheading}}</p>
-    </main>
-{{- end }}
+<main>
+  <h2>{{ .Params.heading }}</h2>
+  <p>{{ .Params.subheading}}</p>
+</main>
+{{- end }}
\ No newline at end of file
diff --git a/layouts/errorpages/single.html b/layouts/errorpages/single.html
index 308c258..126038e 100644
--- a/layouts/errorpages/single.html
+++ b/layouts/errorpages/single.html
@@ -1,11 +1,11 @@
 {{- define "stylesheet" -}}
-    {{- $style := resources.Get "/scss/default.scss" | resources.ToCSS (dict "outputStyle" "compressed") -}}
-    <link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
+{{- $style := resources.Get "/scss/default.scss" | css.Sass (dict "outputStyle" "compressed") -}}
+<link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
 {{- end -}}
 
 {{- define "main" }}
-    <main>
-      <h2>{{ .Params.heading }}</h2>
-      <p>{{ .Params.subheading}}</p>
-    </main>
-{{- end }}
+<main>
+  <h2>{{ .Params.heading }}</h2>
+  <p>{{ .Params.subheading}}</p>
+</main>
+{{- end }}
\ No newline at end of file
diff --git a/layouts/index.html b/layouts/index.html
index 198379d..83137e1 100644
--- a/layouts/index.html
+++ b/layouts/index.html
@@ -1,6 +1,6 @@
 {{- define "stylesheet" -}}
-    {{- $style := resources.Get "/scss/home.scss" | resources.ToCSS (dict "outputStyle" "compressed") -}}
-    <link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
+{{- $style := resources.Get "/scss/home.scss" | css.Sass (dict "outputStyle" "compressed") -}}
+<link rel="preload stylesheet" as="style" href="{{ $style.Permalink }}" type="text/css" media="screen" />
 {{- end -}}
 
 {{- define "header" }}
@@ -12,15 +12,15 @@
 {{ end }}
 
 {{- define "main" }}
-    <main id="main">
-        <div id="general-description">
-            <p id="websites-and-graphics">
-                {{ i18n "home-websites-and-graphics" | safeHTML }}
-            </p>
-            <p id="cozy-town">
-                {{ i18n "home-cozy-town" | safeHTML }}
-            </p>
-        </div>
-        {{ partial "moreposts.html" . }}
-    </main>
-{{- end }}
+<main id="main">
+    <div id="general-description">
+        <p id="websites-and-graphics">
+            {{ i18n "home-websites-and-graphics" | safeHTML }}
+        </p>
+        <p id="cozy-town">
+            {{ i18n "home-cozy-town" | safeHTML }}
+        </p>
+    </div>
+    {{ partial "moreposts.html" . }}
+</main>
+{{- end }}
\ No newline at end of file
diff --git a/layouts/partials/sidebar.html b/layouts/partials/sidebar.html
index b2d71cd..b9561f2 100644
--- a/layouts/partials/sidebar.html
+++ b/layouts/partials/sidebar.html
@@ -24,7 +24,7 @@
             <a class="hint-text" rel="me" href="https://social.anoxinon.de/@vri" aria-label="Mastodon">{{ partial "helpers/icons" "mastodon" }}</a>
         </nav>
         <div id="languages">
-        {{- if .Site.IsMultiLingual }}
+            {{- if hugo.IsMultilingual }}
             {{ $siteLanguages := .Site.Languages }}
             {{ $pageLanguage := .Page.Lang }}
     
@@ -41,4 +41,4 @@
         {{- end }}
         </div>
     </div>
-</header>
+</header>
\ No newline at end of file