diff --git a/src/css/main.css b/src/css/main.css
index dedff00..1628381 100644
--- a/src/css/main.css
+++ b/src/css/main.css
@@ -2,10 +2,9 @@
  * Version:     1.0.0
  */
 
-:root {
-  color-scheme: light dark;
-}
-
+/* :root { */
+/*   color-scheme: only light; */
+/* } */
 html,
 body {
   margin: 0px;
@@ -13,53 +12,68 @@ body {
   height: 100%;
   display: flex;
   flex-direction: column;
+}
+
+html {
   /* colors */
   background-image: linear-gradient(-30deg, #C0E0FF6F 70%, #FFE0C04F);
 }
 
 main {
   margin: auto;
-  width: 80%;
+  min-width: 80%;
   padding: 10px;
   min-height: 40%;
   /* colors */
   border: 1px solid darkblue;
   background-color: white;
-    box-shadow: 3px 3px 3px #30303090;
+  box-shadow: 3px 3px 3px #30303090;
 }
 
-main h1 {
+main>h1 {
   font-family: "Raleway", sans-serif;
   font-size: 4em;
-  margin-top: 4px;
+  margin-top: 0px;
   margin-bottom: 8px;
   text-decoration: underline;
   text-shadow: 0px 0px 4px white, 2px 2px 6px;
 }
 
-main p,
-main a {
-  padding-left: 1em;
+main>p {
+  margin-left: 1em;
+}
+
+main>h2 {
+  margin-left: 0.2em;
+}
+
+ul.dashed {
+  list-style-type: '- ';
 }
 
 .text-red {
   color: red;
 }
 
-@media(prefers-color-scheme: dark) {
+html.theme-dark {
+  color-scheme: dark;
+  background-image: none;
+  background-image: linear-gradient(-10deg, #1010206F 60%, #5050506F);
+  color: white;
+}
 
-  html,
-  body {
-    background-image: linear-gradient(-10deg, #1010206F 60%, #5050506F);
-  }
+.theme-dark>body>main {
+  border: 1px solid darkgray;
+  background-color: black;
+  box-shadow: 3px 3px 5px #101010C0;
+}
 
-  main {
-    border: 1px solid darkgray;
-    background-color: black;
-    box-shadow: 3px 3px 5px #101010C0;
-  }
-  
-  main h1 {
+.theme-dark>body>main>h1 {
   text-shadow: 0px 0px 3px blue, 2px 2px 6px;
+}
+
+@media(orientation: portrait){
+  main{
+    margin: 1em;
   }
 }
diff --git a/src/docs/CV_WardTruyen_2024.pdf b/src/docs/CV_WardTruyen_2024.pdf
new file mode 100644
index 0000000..82c2d99
Binary files /dev/null and b/src/docs/CV_WardTruyen_2024.pdf differ
diff --git a/src/index.html b/src/index.html
index 4cdceb1..ed10671 100644
--- a/src/index.html
+++ b/src/index.html
@@ -7,15 +7,24 @@
 </head>
 
 <body>
+  <header><button title="Dark theme on/off" onclick="toggleTheme();">&#9728;</button></header>
 
   <main>
     <h1>Ward Truyen home</h1>
+    <p>Ik ben een computer wizzard op zoek naar een job in de ICT.
+      Voor meer informatie <a href="docs/CV_WardTruyen_2024.pdf">bekijk mijn cv</a>.</p>
+    <h2>Links</h2>
+    <ul class="dashed">
+      <li> <a href="docs/CV_WardTruyen_2024.pdf">download mijn cv</a> </li>
+      <li> <a href="https://truyen.network">truyen.network</a> </li>
+      <li> <a href="https://tds.truyen.network">tds.truyen.network</a> </li>
+      <li> <a href="https://willem.truyen.network">willem.truyen.network</a> </li>
+    </ul>
     <h2>Status:</h2>
     <p class="text-red">Under construction</p>
-    <h2>Links</h2>
-    <a href="https://truyen.network">truyen.network</a>
   </main>
 
+  <script src="js/theme.js"></script>
 </body>
 
 </html>
diff --git a/src/js/theme.js b/src/js/theme.js
new file mode 100644
index 0000000..c1c7ee8
--- /dev/null
+++ b/src/js/theme.js
@@ -0,0 +1,34 @@
+function toggleTheme() {
+  const theme = "theme-dark";//localStorage.getItem('theme');
+  const root = document.querySelector(":root");
+  root.classList.toggle(theme);
+}
+
+function setTheme(themeName) {
+  console.log("setting them: " + themeName);
+  const root = document.querySelector(":root");
+  root.classList.add(themeName);
+  localStorage.setItem('theme', themeName);
+}
+
+function detectTheme() {
+  const theme = localStorage.getItem('theme');
+  if (theme === 'theme-dark' || theme === 'theme-light') {
+    setTheme(theme);
+    return;
+  }
+
+  if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
+    setTheme('theme-dark');
+    return;
+  }
+
+  // if (window.matchMedia('(prefers-color-scheme: light)').matches) {
+  //   setTheme('theme-light');
+  //   return;
+  // }
+
+  // setTheme('theme-light');
+}
+detectTheme();
+
