diff --git a/config/global.ini b/config/global.ini
index 5fa85c8f..14b37393 100644
--- a/config/global.ini
+++ b/config/global.ini
@@ -27,6 +27,4 @@ A propos = "about.php"
 3 = "Directeur"
 
 [themes]
-0 = '--hue: 0; --saturation: 0%'
-1 = '--hue: 204; --saturation: 80%'
-2 = '--hue: 197; --saturation: 80%'
\ No newline at end of file
+0 = '--text: hsl(208, 100%, 96%); --background: hsl(215, 21%, 11%); --banner-background: hsl(216, 28%, 7%); --buttons: hsl(216, 28%, 7%)'
\ No newline at end of file
diff --git a/html/src/css/style.css b/html/src/css/style.css
index 74644ba2..a9da6ad7 100644
--- a/html/src/css/style.css
+++ b/html/src/css/style.css
@@ -1,23 +1,18 @@
-:root {
-    --saturation: 0%;
-    --hue: 0;
-}
-
 @media (prefers-color-scheme: dark) {
     .body {
-        --text: hsl(var(--hue), var(--saturation), 80%);
-        --background: hsl(var(--hue), var(--saturation), 15%);
-        --banner-background: hsl(var(--hue), var(--saturation), 10%);
-        --buttons: hsl(var(--hue), var(--saturation), 5%);
+        --text: hsl(0, 0%, 80%);
+        --background: hsl(0, 0%, 15%);
+        --banner-background: hsl(0, 0%, 10%);
+        --buttons: hsl(0, 0%, 5%);
     }
 }
 
 @media (prefers-color-scheme: light) {
     .body {
-        --text: hsl(var(--hue), var(--saturation), 20%);
-        --background: hsl(var(--hue), var(--saturation), 100%);
-        --banner-background: hsl(var(--hue), var(--saturation), 100%);
-        --buttons: hsl(var(--hue), var(--saturation), 100%);
+        --text: hsl(0, 0%, 20%);
+        --background: hsl(0, 0%, 100%);
+        --banner-background: hsl(0, 0%, 100%);
+        --buttons: hsl(0, 0%, 100%);
     }
 }
 
diff --git a/include/functions.php b/include/functions.php
index b1af8669..fd804a1b 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -10,10 +10,10 @@ if(!isset($_SESSION['role'])) {
 }
 
 if(isset($_GET['theme'])) {
-    $_SESSION['theme'] = (int)$_GET['theme'] % 2;
+    $_SESSION['theme'] = (int)$_GET['theme'] % 3;
 }
 
-$theme = $themes[$_SESSION['theme']];
+$theme = isset($_SESSION['theme']) ? $themes[$_SESSION['theme']] : "";
 
 
 function nav($nav) {