merge + ajout des boutons sur les tuiles page projet + css page narrative

public/site/templates/narrative-web.php

@@ -105,6 +105,19 @@ foreach ($subpages as $subpage) {
   <div class="nw-hero__overlay"></div>
   <?php endif ?>
 
+  <div class="nw-prev-btn">
+    <a href="<?= $original->parent()->url()?>" title="<?= $original->parent()->title()?>">
+      <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24"
+     fill="none" stroke="currentColor" stroke-width="2"
+     stroke-linecap="round" stroke-linejoin="round">
+      <path d="M19 12H5"/>
+      <polyline points="12 19 5 12 12 5"/>
+    </svg> 
+      <?= $original->parent()->title()->html()?>
+    </a>
+    
+  </div>
+
   <div class="nw-hero__content">
     <h1 class="nw-hero__title"><?= html($original->title()) ?></h1>
     <?php if ($original->author()->isNotEmpty()): ?>