diff --git a/themes/d3/css/d3.css b/themes/d3/css/d3.css
index 913c209..f9a00c7 100644
--- a/themes/d3/css/d3.css
+++ b/themes/d3/css/d3.css
@@ -189,3 +189,10 @@ li {
 .Search__field {
     border-radius: 4px;
 }
+
+.versionselector {
+    padding: 0 20px;
+    font-family: "Roboto Slab",-apple-system,".SFNSText-Regular","San Francisco","Roboto","Segoe UI","Helvetica Neue","Lucida Grande",Arial,sans-serif;
+    font-size: 14px;
+    color: #f7f7f7;
+}
diff --git a/themes/d3/templates/layout/05_page.php b/themes/d3/templates/layout/05_page.php
new file mode 100755
index 0000000..04ffa07
--- /dev/null
+++ b/themes/d3/templates/layout/05_page.php
@@ -0,0 +1,115 @@
+<?php $this->layout('theme::layout/00_layout') ?>
+<div class="Columns content">
+    <aside class="Columns__left Collapsible">
+        <button type="button" class="Button Collapsible__trigger">
+            <span class="Collapsible__trigger__bar"></span>
+            <span class="Collapsible__trigger__bar"></span>
+            <span class="Collapsible__trigger__bar"></span>
+        </button>
+
+        <?php $this->insert('theme::partials/navbar_content', ['params' => $params]); ?>
+
+        <div class="Collapsible__content">
+            <!-- Navigation -->
+            <?php
+            $rendertree = $tree;
+            $path = '';
+
+            if ($page['language'] !== '') {
+                $rendertree = $tree[$page['language']];
+                $path = $page['language'];
+            }
+
+            echo $this->get_navigation($rendertree, $path, isset($params['request']) ? $params['request'] : '', $base_page, $params['mode']);
+            ?>
+
+            <?php
+
+            if ($params['versionselector']) {
+                echo "<div class='versionselector'>";
+                echo $this->translate("selectversion").': ';
+
+                $code = '
+<select onchange="window.location.href=this.options[this.selectedIndex].value" size="1">
+
+<?php
+    $path = str_replace($_SERVER[\'SCRIPT_NAME\'], "", $_SERVER[\'SCRIPT_FILENAME\']);
+
+    $paths = explode(\'/\', $_SERVER[\'SCRIPT_NAME\']);
+    $currpath = $paths[1];
+
+    $dirs = array_filter(glob($path . \'/*\'), \'is_dir\');
+    arsort($dirs);
+
+    foreach ($dirs as $dir) {
+        $dir = str_replace($path.\'/\', \'\', $dir);
+        $selected = ($dir === $currpath) ? "selected" : "";
+        echo \'<option value="/\'. $dir .\'" selected="\'. $selected .\'">\'. $dir .\'</option>\';
+    }
+?>
+';
+
+                echo $code;
+                echo "</select>";
+                echo "</div>";
+            }
+            ?>
+
+
+
+            <div class="Links">
+                <?php if (!empty($params['html']['links'])) { ?>
+                    <hr/>
+                    <?php foreach ($params['html']['links'] as $name => $url) { ?>
+                        <a href="<?= $url ?>" target="_blank"><?= $name ?></a>
+                        <br />
+                    <?php } ?>
+                <?php } ?>
+            </div>
+
+            <?php if ($params['html']['toggle_code']) { ?>
+                    <div class="CodeToggler">
+                        <hr/>
+                        <?php if ($params['html']['float']) { ?>
+                            <span class="CodeToggler__text"><?=$this->translate("CodeBlocks_title") ?></span>
+                            <div class="ButtonGroup" role="group">
+                                <button class="Button Button--default Button--small CodeToggler__button CodeToggler__button--hide"><?=$this->translate("CodeBlocks_hide") ?></button>
+                                <button class="Button Button--default Button--small CodeToggler__button CodeToggler__button--below"><?=$this->translate("CodeBlocks_below") ?></button>
+                                <button class="Button Button--default Button--small CodeToggler__button CodeToggler__button--float"><?=$this->translate("CodeBlocks_inline") ?></button>
+                            </div>
+                        <?php } else { ?>
+                            <label class="Checkbox"><?=$this->translate("CodeBlocks_show") ?>
+                                <input type="checkbox" class="CodeToggler__button--main" checked="checked"/>
+                                <div class="Checkbox__indicator"></div>
+                            </label>
+                        <?php } ?>
+                    </div>
+                <?php } ?>
+
+                <?php if (!empty($params['html']['twitter'])) { ?>
+                    <div class="Twitter">
+                        <hr/>
+                        <?php foreach ($params['html']['twitter'] as $handle) { ?>
+                            <iframe allowtransparency="true" frameborder="0" scrolling="no" style="width:162px; height:20px;" src="https://platform.twitter.com/widgets/follow_button.html?screen_name=<?= $handle; ?>&amp;show_count=false"></iframe>
+                            <br />
+                            <br />
+                        <?php } ?>
+                    </div>
+                <?php } ?>
+
+                <?php if (!empty($params['html']['powered_by'])) { ?>
+                    <div class="PoweredBy">
+                        <hr/>
+                        <?= $params['html']['powered_by'] ?>
+                    </div>
+                <?php } ?>
+        </div>
+    </aside>
+    <div class="Columns__right <?= $params['html']['float'] ? 'Columns__right--float' : 'Columns__right--full'; ?>">
+        <div class="Columns__right__content">
+            <div class="doc_content">
+                <?= $this->section('content'); ?>
+            </div>
+        </div>
+    </div>
+</div>