diff --git a/careers.php b/careers.php
index 1b220e1..79faed0 100644
--- a/careers.php
+++ b/careers.php
@@ -13,7 +13,7 @@ require('includes/header.php');
           border-top-width: 3px;
           border-top-style: solid;
         "
-        class="shadow p-10 mb-3 couldDark"
+        class="shadow p-10 mb-3 couldDark <?php if($_COOKIE["darkmode"] == "true") echo "darkMode"; ?>"
       >
         <img
           id="background-image"
diff --git a/extras.php b/extras.php
index 6194898..3aaf604 100644
--- a/extras.php
+++ b/extras.php
@@ -13,7 +13,7 @@ require('includes/header.php');
     </h1>
     <h4>Okay, maybe more than one..!</h4>
     <br>
-    <hr class="couldDark">
+    <hr class="couldDark <?php if($_COOKIE["darkmode"] == "true") echo "darkMode"; ?>">
     <div id="bobbycar-stl">
         <h3>Bobbycar</h3>
         <p>This is an .stl file containing an 3d model of a standard bobbycar (Click picture to download!)</p>
@@ -27,7 +27,7 @@ require('includes/header.php');
         " alt="Click Here to download!" draggable="false" ondragstart="return false;">
         </a>
     </div>
-    <hr class="couldDark">
+    <hr class="couldDark <?php if($_COOKIE["darkmode"] == "true") echo "darkMode"; ?>">
     <div id="logo-stl">
         <h3>Our Logo</h3>
         <p>Here we put our logo as an "plate", so you can print it out and put it somewhere so it can get dusty (Click picture to download!)</p>
@@ -41,7 +41,7 @@ require('includes/header.php');
         " alt="Click Here to download!" draggable="false" ondragstart="return false;">
         </a>
     </div>
-    <hr class="couldDark">
+    <hr class="couldDark <?php if($_COOKIE["darkmode"] == "true") echo "darkMode"; ?>">
     <div id="kartoffelfahrzeug">
         <h3>Der Kartoffelfahrzeug (The potato-vehicle)</h3>
         <p>This was <a href="./about#greyhash">greyhashs</a> attempt of creating his own "instance" of a bobbycar. It was powered by two
@@ -54,7 +54,7 @@ require('includes/header.php');
         border-color: gray;
         " draggable="false" ondragstart="return false;">
     </div>
-    <hr class="couldDark">
+    <hr class="couldDark <?php if($_COOKIE["darkmode"] == "true") echo "darkMode"; ?>">
     <br>
     <br>
 </div>
diff --git a/includes/header.php b/includes/header.php
index 8e3353a..dc5ce5a 100644
--- a/includes/header.php
+++ b/includes/header.php
@@ -21,5 +21,5 @@
     <link rel="icon" href="./img/favicon.png" />
   </head>
 
-  <body class="couldDark">
+  <body class="couldDark <?php if($_COOKIE["darkmode"] == "true") echo "darkMode"; ?>">
 <?php require('navbar.php') ?>
diff --git a/includes/navbar.php b/includes/navbar.php
index d46742b..801b3c7 100644
--- a/includes/navbar.php
+++ b/includes/navbar.php
@@ -1,8 +1,16 @@
     <!--Begin Navbar-->
-    <nav class="navbar navbar-expand-lg navbar-light bg-light couldDark disable-select sticky-top" id="navbar">
+    <nav class="navbar navbar-expand-lg couldDark disable-select sticky-top <?php if ($_COOKIE["darkmode"] == "true") {
+                                                                              echo "darkMode bg-dark navbar-dark";
+                                                                            } else {
+                                                                              echo "bg-light navbar-light";
+                                                                            } ?>" id="navbar">
       <div class="container">
         <a class="navbar-brand" href="./" draggable="false" ondragstart="return false;">
-          <img src="./img/PfostenDynamics.png" style="max-height: 60px" class="d-inline-block align-top" alt="" loading="lazy" id="pfostendynamics" />
+          <img src="<?php if ($_COOKIE["darkmode"] == "true") {
+                      echo "./img/PfostenDynamicsDark.png";
+                    } else {
+                      echo "./img/PfostenDynamics.png";
+                    } ?>" style="max-height: 60px" class="d-inline-block align-top" alt="" loading="lazy" id="pfostendynamics" />
         </a>
         <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
           <span class="navbar-toggler-icon"></span>
@@ -38,7 +46,12 @@
             <?php makeMenuItem("Shop", "./shop", ACTIVE_MENUITEM == "shop"); ?>
             <?php makeMenuItem("Impressum", "./impressum", ACTIVE_MENUITEM == "impressum"); ?>
           </ul>
-          <a class="nav-link toggleDarkmode" href="javascript:void(0)" onclick="darkMode()" draggable="false" ondragstart="return false;"><img id="darkModeImg" class="img-fluid" data-toggle="tooltip" data-placement="top" title="Toggle darkmode" draggable="false" ondragstart="return false;" /></a>
+          <a class="nav-link toggleDarkmode" href="javascript:void(0)" onclick="darkMode()" draggable="false" ondragstart="return false;">
+            <img src="<?php if ($_COOKIE["darkmode"] == "true") {
+                      echo "./img/darkmode.png";
+                    } else {
+                      echo "./img/lightmode.png";
+                    } ?>" id="darkModeImg" class="img-fluid" data-toggle="tooltip" data-placement="top" title="Toggle darkmode" draggable="false" ondragstart="return false;" /></a>
         </div>
       </div>
     </nav>
diff --git a/index.php b/index.php
index 3852d29..3530c39 100644
--- a/index.php
+++ b/index.php
@@ -12,7 +12,7 @@ require('includes/header.php');
       <div class="row">
         <div class="col-sm text-right">
           <br />
-          <h1 class="text-shadow couldDark" style="text-shadow: 1.3px 1.3px #686868">Pfosten Dynamics</h1>
+          <h1 class="text-shadow couldDark <?php if($_COOKIE["darkmode"] == "true") echo "darkMode"; ?>" style="text-shadow: 1.3px 1.3px #686868">Pfosten Dynamics</h1>
           <h2>Change your idea of what idiots can do</h2>
         </div>
         <div class="col-sm text-left">
