diff --git a/config/sync/block.block.reha_contenudelapageprincipale.yml b/config/sync/block.block.reha_contenudelapageprincipale.yml
index 75b2781..3f4f0c7 100644
--- a/config/sync/block.block.reha_contenudelapageprincipale.yml
+++ b/config/sync/block.block.reha_contenudelapageprincipale.yml
@@ -9,7 +9,7 @@ dependencies:
 id: reha_contenudelapageprincipale
 theme: reha
 region: content
-weight: -5
+weight: -6
 provider: null
 plugin: system_main_block
 settings:
diff --git a/config/sync/block.block.reha_onglets.yml b/config/sync/block.block.reha_onglets.yml
index 76bd769..80de468 100644
--- a/config/sync/block.block.reha_onglets.yml
+++ b/config/sync/block.block.reha_onglets.yml
@@ -7,7 +7,7 @@ dependencies:
 id: reha_onglets
 theme: reha
 region: content
-weight: -6
+weight: -5
 provider: null
 plugin: local_tasks_block
 settings:
diff --git a/config/sync/block.block.reha_prevnextblock.yml b/config/sync/block.block.reha_prevnextblock.yml
new file mode 100644
index 0000000..a7287ee
--- /dev/null
+++ b/config/sync/block.block.reha_prevnextblock.yml
@@ -0,0 +1,20 @@
+uuid: 5cc94347-dd4a-4c9f-896f-27367c9542ac
+langcode: fr
+status: true
+dependencies:
+  module:
+    - reha_mod
+  theme:
+    - reha
+id: reha_prevnextblock
+theme: reha
+region: content
+weight: -8
+provider: null
+plugin: prevnext_block
+settings:
+  id: prevnext_block
+  label: 'PrevNext Block'
+  label_display: '0'
+  provider: reha_mod
+visibility: {  }
diff --git a/web/modules/reha_mod/reha_mod.info.yml b/web/modules/reha_mod/reha_mod.info.yml
index 1eab22a..66861a2 100644
--- a/web/modules/reha_mod/reha_mod.info.yml
+++ b/web/modules/reha_mod/reha_mod.info.yml
@@ -3,3 +3,5 @@ type: module
 description: Provides additional functionality for the site.
 package: Custom
 core_version_requirement: ^9 || ^10
+dependencies:
+  - drupal:block
\ No newline at end of file
diff --git a/web/modules/reha_mod/reha_mod.module b/web/modules/reha_mod/reha_mod.module
index c5f0fd6..8346d5b 100644
--- a/web/modules/reha_mod/reha_mod.module
+++ b/web/modules/reha_mod/reha_mod.module
@@ -23,4 +23,5 @@ function reha_mod_form_node_operation_form_alter(&$form, \Drupal\Core\Form\FormS
   if($type === 'operation'){
     $form['field_adresse']['widget'][0]['#type'] = 'container';
   }
-}
\ No newline at end of file
+}
+
diff --git a/web/modules/reha_mod/src/Plugin/Block/PrevNext.php b/web/modules/reha_mod/src/Plugin/Block/PrevNext.php
new file mode 100644
index 0000000..b92e96e
--- /dev/null
+++ b/web/modules/reha_mod/src/Plugin/Block/PrevNext.php
@@ -0,0 +1,85 @@
+<?php
+
+namespace Drupal\reha_mod\Plugin\Block;
+
+use Drupal\Core\Block\BlockBase;
+use Drupal\Core\Block\Attribute\Block;
+// use Drupal\Core\StringTranslation\TranslatableMarkup;
+use Drupal\Core\Link;
+use Drupal\Core\Render\Markup;
+
+/**
+ * Provides a 'Prevnext' Block.
+ * @Block(
+ *   id = "prevnext_block",
+ *   admin_label = @Translation("PrevNext Block"),
+ * )
+ */
+class PrevNext extends BlockBase {
+ 
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    $return = null;
+    /** @var Drupal\node\Entity\Node */
+    $node = \Drupal::routeMatch()->getParameter('node');
+    if ($node) {
+      $nodetype = $node->getType();
+      if($nodetype === "site"){
+        $numerodesite = $node->get('field_numero_site')->getString();
+        $allSites = \Drupal::entityTypeManager()->getStorage('node')
+          ->loadByProperties(['type' => 'site', 'status' => 1, 'field_type_de_site' => 1]);
+  
+        
+  
+        usort($allSites, function($a, $b){
+          $numA = $a->get('field_numero_site')->getString();
+          $numB = $b->get('field_numero_site')->getString();
+          if ($numA == $numB) {
+              return 0;
+          }
+          return ($numA < $numB) ? -1 : 1;
+        });
+        $prevnode = null;
+        $nextnode = null;
+        foreach($allSites as $index => $site){
+          $n = $site->get('field_numero_site')->getString();
+          if($n === $numerodesite){
+            $prevnode = $index - 1 >= 0 ? $allSites[$index - 1] : null;
+            $nextnode = $index + 1 < count($allSites) ? $allSites[$index + 1] : null;
+            break;
+          }
+        }
+  
+      }
+      $return = [
+        '#cache' => [
+          'max-age' => 0,
+        ]
+      ];
+  
+      if ($prevnode) {
+        $prev_link_title = Markup::create('<span>Site pilote précédent</span>');
+        $prev_options = ['absolute' => FALSE, 'attributes' => ['class' => 'prev-site']];
+        $prev_link_object = Link::createFromRoute($prev_link_title, 'entity.node.canonical', ['node' => $prevnode->id()], $prev_options);
+        $return[] = $prev_link_object->toRenderable();
+      }
+  
+      if ($nextnode) {
+        $next_link_title = Markup::create('<span>Site pilote suivant</span>');
+        $next_options = ['absolute' => FALSE, 'attributes' => ['class' => 'next-site']];
+        $next_link_object = Link::createFromRoute($next_link_title, 'entity.node.canonical', ['node' => $nextnode->id()], $next_options);
+        $return[] = $next_link_object->toRenderable();
+      }
+    }
+    
+    return $return;
+    // return [
+    //   '#markup' => $this->t('Hello, World!'),
+    // ];
+  }
+  public function getCacheMaxAge() {
+    return 0;
+  }
+}
\ No newline at end of file