diff --git a/lib/Controller/CssController.php b/lib/Controller/CssController.php
index 338acb7..06f7ae8 100644
--- a/lib/Controller/CssController.php
+++ b/lib/Controller/CssController.php
@@ -126,25 +126,33 @@ class CssController extends Controller
         if ($isDarkMode) {
             $backgroundColor = $this->config->getAppValue('dark-mode-background-color', $darkenPrimaryColor);
             $backgroundColorTo = $this->config->getAppValue('dark-mode-background-color-to', $darkenPrimaryColor);
-            $currentAppBackgroundColor = $this->config->getAppValue('dark-mode-current-app-background-color', $darkenPrimaryColor2);
+            $currentAppBackgroundColor = $this->config->getAppValue(
+                'dark-mode-current-app-background-color',
+                $darkenPrimaryColor2
+            );
             $loaderColor = $this->config->getAppValue('dark-mode-loader-color', $lightenPrimaryColor);
             $textColor = $this->config->getAppValue('dark-mode-text-color', $textColor);
             $iconInvertFilter = abs($this->config->getAppValueInt('dark-mode-icon-invert-filter', '0')).'%';
             $iconOpacity = abs($this->config->getAppValueInt('dark-mode-icon-opacity', '100') / 100);
             $opener = $this->config->getAppValue('dark-mode-opener', 'side-menu-opener');
 
-            $backgroundOpacity = dechex($this->config->getAppValueInt('dark-mode-background-color-opacity', '100') * 255 / 100);
+            $opacity = $this->config->getAppValueInt('dark-mode-background-color-opacity', '100');
+            $backgroundOpacity = dechex($opacity * 255 / 100);
         } else {
             $backgroundColor = $this->config->getAppValue('background-color', $darkenPrimaryColor);
             $backgroundColorTo = $this->config->getAppValue('background-color-to', $darkenPrimaryColor);
-            $currentAppBackgroundColor = $this->config->getAppValue('current-app-background-color', $darkenPrimaryColor2);
+            $currentAppBackgroundColor = $this->config->getAppValue(
+                'current-app-background-color',
+                $darkenPrimaryColor2
+            );
             $loaderColor = $this->config->getAppValue('loader-color', $lightenPrimaryColor);
             $textColor = $this->config->getAppValue('text-color', $textColor);
             $iconInvertFilter = abs($this->config->getAppValueInt('icon-invert-filter', '0')).'%';
             $iconOpacity = abs($this->config->getAppValueInt('icon-opacity', '100') / 100);
             $opener = $this->config->getAppValue('opener', 'side-menu-opener');
 
-            $backgroundOpacity = dechex($this->config->getAppValueInt('background-color-opacity', '100') * 255 / 100);
+            $opacity = $this->config->getAppValueInt('background-color-opacity', '100');
+            $backgroundOpacity = dechex($opacity * 255 / 100);
         }
 
         $backgroundColor .= $backgroundOpacity;