diff --git a/public/main/admin/settings.lib.php b/public/main/admin/settings.lib.php
index abdde4942ad..59f5f2ae244 100644
--- a/public/main/admin/settings.lib.php
+++ b/public/main/admin/settings.lib.php
@@ -262,251 +262,6 @@ function handlePlugins()
     echo '</form>';
 }
 
-/**
- * This function allows the platform admin to choose the default stylesheet.
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- * @author Julio Montoya <gugli100@gmail.com>, Chamilo
- */
-function handleStylesheets()
-{
-    $is_style_changeable = isStyleChangeable();
-    $allowedFileTypes = ['png'];
-
-    $form = new FormValidator(
-        'stylesheet_upload',
-        'post',
-        'settings.php?category=Stylesheets#tabs-3'
-    );
-    $form->addElement(
-        'text',
-        'name_stylesheet',
-        get_lang('Name of the stylesheet'),
-        ['size' => '40', 'maxlength' => '40']
-    );
-    $form->addRule(
-        'name_stylesheet',
-        get_lang('Required field'),
-        'required'
-    );
-    $form->addElement(
-        'file',
-        'new_stylesheet',
-        get_lang('New stylesheet file')
-    );
-    $allowed_file_types = getAllowedFileTypes();
-
-    $form->addRule(
-        'new_stylesheet',
-        get_lang('Invalid extension').' ('.implode(',', $allowed_file_types).')',
-        'filetype',
-        $allowed_file_types
-    );
-    $form->addRule(
-        'new_stylesheet',
-        get_lang('Required field'),
-        'required'
-    );
-    $form->addButtonUpload(get_lang('Upload'), 'stylesheet_upload');
-
-    $show_upload_form = false;
-    $urlId = api_get_current_access_url_id();
-
-    if (!is_writable(CSS_UPLOAD_PATH)) {
-        echo Display::return_message(
-            CSS_UPLOAD_PATH.get_lang('is not writeable'),
-            'error',
-            false
-        );
-    } else {
-        // Uploading a new stylesheet.
-        if (1 == $urlId) {
-            $show_upload_form = true;
-        } else {
-            if ($is_style_changeable) {
-                $show_upload_form = true;
-            }
-        }
-    }
-
-    // Stylesheet upload.
-    if (isset($_POST['stylesheet_upload'])) {
-        if ($form->validate()) {
-            $values = $form->exportValues();
-            $picture_element = $form->getElement('new_stylesheet');
-            $picture = $picture_element->getValue();
-            $result = uploadStylesheet($values, $picture);
-
-            // Add event to the system log.
-            $user_id = api_get_user_id();
-            $category = $_GET['category'];
-            Event::addEvent(
-                LOG_CONFIGURATION_SETTINGS_CHANGE,
-                LOG_CONFIGURATION_SETTINGS_CATEGORY,
-                $category,
-                api_get_utc_datetime(),
-                $user_id
-            );
-
-            if ($result) {
-                echo Display::return_message(get_lang('The stylesheet has been added'));
-            }
-        }
-    }
-
-    // Current style.
-    $selected = $currentStyle = api_get_setting('stylesheets');
-    $styleFromDatabase = api_get_settings_params_simple(
-        ['variable = ? AND access_url = ?' => ['stylesheets', api_get_current_access_url_id()]]
-    );
-    if ($styleFromDatabase) {
-        $selected = $currentStyle = $styleFromDatabase['selected_value'];
-    }
-
-    if (isset($_POST['preview'])) {
-        $selected = $currentStyle = Security::remove_XSS($_POST['style']);
-    }
-
-    $themeDir = Template::getThemeDir($selected);
-    $dir = api_get_path(SYS_PUBLIC_PATH).'css/'.$themeDir.'/images/';
-    $url = api_get_path(WEB_CSS_PATH).'/'.$themeDir.'/images/';
-    $logoFileName = 'header-logo.png';
-    $newLogoFileName = 'header-logo-custom'.api_get_current_access_url_id().'.png';
-    $webPlatformLogoPath = ChamiloApi::getPlatformLogoPath($selected);
-
-    $logoForm = new FormValidator(
-        'logo_upload',
-        'post',
-        'settings.php?category=Stylesheets#tabs-2'
-    );
-
-    $logoForm->addHtml(
-        Display::return_message(
-            sprintf(
-                get_lang('The logo must be of %s px in size and in %s format'),
-                '250 x 70',
-                'PNG'
-            ),
-            'info'
-        )
-    );
-
-    if (null !== $webPlatformLogoPath) {
-        $logoForm->addLabel(
-            get_lang('Current logo'),
-            '<img id="header-logo-custom" src="'.$webPlatformLogoPath.'?'.time().'">'
-        );
-    }
-    $logoForm->addFile('new_logo', get_lang('Update logo'));
-    if ($is_style_changeable) {
-        $logoGroup = [
-            $logoForm->addButtonUpload(get_lang('Upload'), 'logo_upload', true),
-            $logoForm->addButtonCancel(get_lang('Reset'), 'logo_reset', true),
-        ];
-
-        $logoForm->addGroup($logoGroup);
-    }
-
-    if (isset($_POST['logo_reset'])) {
-        if (is_file($dir.$newLogoFileName)) {
-            unlink($dir.$newLogoFileName);
-            echo Display::return_message(get_lang('Original logo recovered'));
-            echo '<script>'
-                .'$("#header-logo").attr("src","'.$url.$logoFileName.'");'
-            .'</script>';
-        }
-    } elseif (isset($_POST['logo_upload'])) {
-        $logoForm->addRule(
-            'new_logo',
-            get_lang('Invalid extension').' ('.implode(',', $allowedFileTypes).')',
-            'filetype',
-            $allowedFileTypes
-        );
-        $logoForm->addRule(
-            'new_logo',
-            get_lang('Required field'),
-            'required'
-        );
-
-        if ($logoForm->validate()) {
-            $imageInfo = getimagesize($_FILES['new_logo']['tmp_name']);
-            $width = $imageInfo[0];
-            $height = $imageInfo[1];
-            if ($width <= 250 && $height <= 70) {
-                if (is_file($dir.$newLogoFileName)) {
-                    unlink($dir.$newLogoFileName);
-                }
-
-                $status = move_uploaded_file(
-                    $_FILES['new_logo']['tmp_name'],
-                    $dir.$newLogoFileName
-                );
-
-                if ($status) {
-                    echo Display::return_message(get_lang('New logo uploaded'));
-                    echo '<script>'
-                         .'$("#header-logo").attr("src","'.$url.$newLogoFileName.'");'
-                         .'</script>';
-                } else {
-                    echo Display::return_message('Error - '.get_lang('No file was uploaded.'), 'error');
-                }
-            } else {
-                Display::return_message('Error - '.get_lang('Image dimensions do not match the requirements. Please check the suggestions next to the image field.'), 'error');
-            }
-        }
-    }
-
-    if (isset($_POST['download'])) {
-        generateCSSDownloadLink($selected);
-    }
-
-    $form_change = new FormValidator(
-        'stylesheet_upload',
-        'post',
-        api_get_self().'?category=Stylesheets',
-        null,
-        ['id' => 'stylesheets_id']
-    );
-
-    $styles = $form_change->addSelectTheme(
-        'style',
-        get_lang('Name of the stylesheet')
-    );
-    $styles->setSelected($currentStyle);
-
-    if ($is_style_changeable) {
-        $group = [
-            $form_change->addButtonSave(get_lang('Save settings'), 'save', true),
-            $form_change->addButtonPreview(get_lang('Preview'), 'preview', true),
-            $form_change->addButtonDownload(get_lang('Download'), 'download', true),
-        ];
-
-        $form_change->addGroup($group);
-
-        if ($show_upload_form) {
-            echo Display::tabs(
-                [get_lang('Update'), get_lang('Update logo'), get_lang('New stylesheet file')],
-                [$form_change->returnForm(), $logoForm->returnForm(), $form->returnForm()]
-            );
-        } else {
-            $form_change->display();
-        }
-
-        // Little hack to update the logo image in update form when submiting
-        if (isset($_POST['logo_reset'])) {
-            echo '<script>'
-                    .'$("#header-logo-custom").attr("src","'.$url.$logoFileName.'");'
-                .'</script>';
-        } elseif (isset($_POST['logo_upload']) && is_file($dir.$newLogoFileName)) {
-            echo '<script>'
-                    .'$("#header-logo-custom").attr("src","'.$url.$newLogoFileName.'");'
-                .'</script>';
-        }
-    } else {
-        $form_change->freeze();
-    }
-}
-
 /**
  * Creates the folder (if needed) and uploads the stylesheet in it.
  *
@@ -708,27 +463,6 @@ function storePlugins()
     }
 }
 
-/**
- * This function allows the platform admin to choose which should be the default stylesheet.
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- */
-function storeStylesheets()
-{
-    // Insert the stylesheet.
-    if (isStyle($_POST['style'])) {
-        api_set_setting(
-            'stylesheets',
-            $_POST['style'],
-            null,
-            'stylesheets',
-            api_get_current_access_url_id()
-        );
-    }
-
-    return true;
-}
-
 /**
  * This function checks if the given style is a recognize style that exists in the css directory as
  * a standalone directory.
@@ -1896,28 +1630,6 @@ function generateCSSDownloadLink($style)
     }
 }
 
-/**
- * Helper function to tell if the style is changeable in the current URL.
- *
- * @return bool $changeable Whether the style can be changed in this URL or not
- */
-function isStyleChangeable()
-{
-    $changeable = false;
-    $urlId = api_get_current_access_url_id();
-    if ($urlId) {
-        $style_info = api_get_settings('stylesheets', '', 1, 0);
-        $url_info = api_get_access_url($urlId);
-        if (1 == $style_info[0]['access_url_changeable'] && 1 == $url_info['active']) {
-            $changeable = true;
-        }
-    } else {
-        $changeable = true;
-    }
-
-    return $changeable;
-}
-
 /**
  * Get all settings of one category prepared for display in admin/settings.php.
  *
diff --git a/public/main/admin/settings.php b/public/main/admin/settings.php
index 6c5591f90bd..ab5038624e1 100644
--- a/public/main/admin/settings.php
+++ b/public/main/admin/settings.php
@@ -57,7 +57,7 @@
 
 // Build the form.
 if (!empty($_GET['category']) &&
-    !in_array($_GET['category'], ['Plugins', 'stylesheets', 'Search'])
+    !in_array($_GET['category'], ['Plugins', 'Search'])
 ) {
     $my_category = isset($_GET['category']) ? $_GET['category'] : null;
     $settings_array = getCategorySettings($my_category);
diff --git a/public/main/inc/lib/api.lib.php b/public/main/inc/lib/api.lib.php
index 10330822d5d..875f7ec5a5d 100644
--- a/public/main/inc/lib/api.lib.php
+++ b/public/main/inc/lib/api.lib.php
@@ -2692,8 +2692,6 @@ function api_get_setting($variable, $isArray = false, $key = null)
             }
 
             return 'prod';
-        case 'stylesheets':
-            $variable = 'platform.theme';
         // deprecated settings
         // no break
         case 'openid_authentication':
diff --git a/src/CoreBundle/Migrations/Schema/V200/Version20170627122900.php b/src/CoreBundle/Migrations/Schema/V200/Version20170627122900.php
index f94fd01cba9..ec8ca720f20 100644
--- a/src/CoreBundle/Migrations/Schema/V200/Version20170627122900.php
+++ b/src/CoreBundle/Migrations/Schema/V200/Version20170627122900.php
@@ -96,7 +96,6 @@ public function up(Schema $schema): void
             'registration' => 'required_profile_fields',
             'profile' => 'changeable_options',
             'timezone_value' => 'timezone',
-            'stylesheets' => 'theme',
             'platformLanguage' => 'platform_language',
             'languagePriority1' => 'language_priority_1',
             'languagePriority2' => 'language_priority_2',
@@ -319,6 +318,7 @@ public function up(Schema $schema): void
             'sso_force_redirect',
             'activate_email_template',
             'sso_authentication_subclass',
+            'stylesheets',
         ];
 
         foreach ($settings as $setting) {
diff --git a/src/CoreBundle/Resources/config/settings.yml b/src/CoreBundle/Resources/config/settings.yml
index b2c044e5265..6580ed6818f 100644
--- a/src/CoreBundle/Resources/config/settings.yml
+++ b/src/CoreBundle/Resources/config/settings.yml
@@ -193,8 +193,3 @@ services:
         class: Chamilo\CoreBundle\Settings\WebServiceSettingsSchema
         tags:
             - {name: sylius.settings_schema, alias: chamilo_core.settings.webservice, namespace: webservice}
-
-    chamilo_core.settings.stylesheets:
-      class: Chamilo\CoreBundle\Settings\StylesheetsSettingsSchema
-      tags:
-        - { name: sylius.settings_schema, alias: chamilo_core.settings.stylesheets, namespace: stylesheets }
diff --git a/src/CoreBundle/Settings/SettingsManager.php b/src/CoreBundle/Settings/SettingsManager.php
index f598ef9175f..8b933c91baf 100644
--- a/src/CoreBundle/Settings/SettingsManager.php
+++ b/src/CoreBundle/Settings/SettingsManager.php
@@ -658,7 +658,6 @@ private function getVariablesAndCategories(): array
             // 'donotlistcampus' =>'null',
             'show_email_addresses' => 'Platform',
             'service_ppt2lp' => 'NULL',
-            'stylesheets' => 'stylesheets',
             'upload_extensions_list_type' => 'Security',
             'upload_extensions_blacklist' => 'Security',
             'upload_extensions_whitelist' => 'Security',
@@ -920,7 +919,6 @@ private function renameVariable($variable)
             'siteName' => 'site_name',
             'InstitutionUrl' => 'institution_url',
             'registration' => 'required_profile_fields',
-            'stylesheets' => 'theme',
             'platformLanguage' => 'platform_language',
             'languagePriority1' => 'language_priority_1',
             'languagePriority2' => 'language_priority_2',
diff --git a/src/CoreBundle/Settings/StylesheetsSettingsSchema.php b/src/CoreBundle/Settings/StylesheetsSettingsSchema.php
deleted file mode 100644
index fd0392f932d..00000000000
--- a/src/CoreBundle/Settings/StylesheetsSettingsSchema.php
+++ /dev/null
@@ -1,76 +0,0 @@
-<?php
-
-/* For licensing terms, see /license.txt */
-
-declare(strict_types=1);
-
-namespace Chamilo\CoreBundle\Settings;
-
-use Sylius\Bundle\SettingsBundle\Schema\AbstractSettingsBuilder;
-use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
-use Symfony\Component\Finder\Finder;
-use Symfony\Component\Form\Extension\Core\Type\ChoiceType;
-use Symfony\Component\Form\FormBuilderInterface;
-use Symfony\Contracts\Service\Attribute\Required;
-
-class StylesheetsSettingsSchema extends AbstractSettingsSchema
-{
-    private ParameterBagInterface $parameterBag;
-
-    #[Required]
-    public function setParameterBag(ParameterBagInterface $parameterBag): void
-    {
-        $this->parameterBag = $parameterBag;
-    }
-
-    public function buildSettings(AbstractSettingsBuilder $builder): void
-    {
-        $builder
-            ->setDefaults(
-                [
-                    'stylesheets' => 'chamilo',
-                ]
-            )
-        ;
-        $allowedTypes = [
-            'stylesheets' => ['string'],
-        ];
-        $this->setMultipleAllowedTypes($allowedTypes, $builder);
-    }
-
-    public function buildForm(FormBuilderInterface $builder): void
-    {
-        $builder
-            ->add('stylesheets', ChoiceType::class, [
-                'choices' => $this->getThemeChoices(),
-                'label' => 'Select Stylesheet Theme',
-            ])
-        ;
-
-        $this->updateFormFieldsFromSettingsInfo($builder);
-    }
-
-    private function getThemeChoices(): array
-    {
-        $projectDir = $this->parameterBag->get('kernel.project_dir');
-        $themesDirectory = $projectDir.'/assets/css/themes/';
-
-        $finder = new Finder();
-        $choices = [];
-
-        $finder->directories()->in($themesDirectory)->depth('== 0');
-        if ($finder->hasResults()) {
-            foreach ($finder as $folder) {
-                $folderName = $folder->getRelativePathname();
-                $choices[$this->formatFolderName($folderName)] = $folderName;
-            }
-        }
-
-        return $choices;
-    }
-
-    private function formatFolderName(string $name): string
-    {
-        return ucwords(str_replace('_', ' ', $name));
-    }
-}