diff --git a/css/paragraphs.widget.css b/css/paragraphs.widget.css
index 9994da3..09338d3 100644
--- a/css/paragraphs.widget.css
+++ b/css/paragraphs.widget.css
@@ -12,6 +12,8 @@
 
 .js .field--widget-paragraphs .field-multiple-table {
   margin-bottom: 10px;
+  padding: initial;
+  display: table;
 }
 
 .js .field--widget-paragraphs td {
@@ -92,6 +94,11 @@
   margin-left: auto;
 }
 
+/* Removing double bottom border */
+.is-horizontal .tabs__tab {
+  border-bottom: 0;
+}
+
 /* Override 600px breakpoint core submit button tweaks. */
 @media screen and (max-width: 600px) {
   .js .paragraphs-edit-button-container {
diff --git a/js/paragraphs.admin.js b/js/paragraphs.admin.js
new file mode 100644
index 0000000..49f6333
--- /dev/null
+++ b/js/paragraphs.admin.js
@@ -0,0 +1,38 @@
+(function ($, Drupal) {
+
+  'use strict';
+
+  /**
+   * For body tag, adds tabs for selecting how the content will be displayed.
+   *
+   * @type {Drupal~behavior}
+   */
+  Drupal.behaviors.bodyTabs = {
+    attach: function (context, settings) {
+      /** Set content fields to visible when tabs are created **/
+      $('.paragraphs-content').show();
+      $('.paragraphs-behavior').hide();
+      /** Create click event **/
+      $(context).find('.paragraphs-tabs').find('a').click(function(e) {
+        e.preventDefault();
+        /** Switching active class between tabs */
+        var el = jQuery(this);
+        $(context).find('.paragraphs-tabs').find('li').removeClass('is-active');
+        el.parent('li').addClass('is-active');
+        $(context).find('.paragraphs-tabs-wrapper').removeClass('is-active');
+        $(context).find(el.attr('href')).addClass('is-active');
+        /** Show/Hide fields based on current active class */
+        if($(context).find('.paragraphs-tabs-wrapper').find('#content').hasClass('is-active')) {
+          $('.paragraphs-content').show();
+          $('.paragraphs-behavior').hide();
+        }
+        if($(context).find('.paragraphs-tabs-wrapper').find('#behavior').hasClass('is-active')) {
+          $('.paragraphs-content').hide();
+          $('.paragraphs-behavior').show();
+        }
+      } );
+    }
+  };
+
+})(jQuery, Drupal);
+
diff --git a/paragraphs.libraries.yml b/paragraphs.libraries.yml
index bb2015d..2c2f4a0 100644
--- a/paragraphs.libraries.yml
+++ b/paragraphs.libraries.yml
@@ -1,5 +1,4 @@
 drupal.paragraphs.admin:
-  version: VERSION
   dependencies:
       - core/jquery
       - core/drupal
@@ -13,6 +12,16 @@ drupal.paragraphs.admin:
       css/paragraphs.admin.css: {}
 
 drupal.paragraphs.widget:
+  dependencies:
+    - core/jquery
+    - core/drupal
+    - core/drupalSettings
+    - core/jquery.once
+    - core/jquery.form
+    - core/drupal.ajax
+    - core/drupal.dropbutton
   css:
     theme:
       css/paragraphs.widget.css: {}
+  js:
+    js/paragraphs.admin.js: {}
diff --git a/src/ParagraphInterface.php b/src/ParagraphInterface.php
index 5d60881..7fd9ec3 100644
--- a/src/ParagraphInterface.php
+++ b/src/ParagraphInterface.php
@@ -9,8 +9,7 @@ use Drupal\Core\Entity\ContentEntityInterface;
  * Provides an interface defining a paragraphs entity.
  * @ingroup paragraphs
  */
-interface ParagraphInterface extends ContentEntityInterface, EntityOwnerInterface
-{
+interface ParagraphInterface extends ContentEntityInterface, EntityOwnerInterface {
 
   /**
    * Gets the parent entity of the paragraph.
@@ -21,4 +20,9 @@ interface ParagraphInterface extends ContentEntityInterface, EntityOwnerInterfac
    *   The parent entity.
    */
   public function getParentEntity();
+
+  /**
+   * @return \Drupal\paragraphs\ParagraphsTypeInterface
+   */
+  public function getParagraphType();
 }
diff --git a/src/ParagraphsBehaviorBase.php b/src/ParagraphsBehaviorBase.php
index f523bc7..28abd11 100644
--- a/src/ParagraphsBehaviorBase.php
+++ b/src/ParagraphsBehaviorBase.php
@@ -118,7 +118,7 @@ abstract class ParagraphsBehaviorBase extends PluginBase implements ParagraphsBe
    * {@inheritdoc}
    */
   public function buildBehaviorForm(ParagraphInterface $paragraph, array &$form, FormStateInterface $form_state) {
-    return [];
+    return $form;
   }
 
   /**
diff --git a/src/ParagraphsTypeInterface.php b/src/ParagraphsTypeInterface.php
index a169dca..7e426ec 100644
--- a/src/ParagraphsTypeInterface.php
+++ b/src/ParagraphsTypeInterface.php
@@ -31,7 +31,7 @@ interface ParagraphsTypeInterface extends ConfigEntityInterface {
   /**
    * Retrieves all the enabled plugins.
    *
-   * @return array
+   * @return \Drupal\paragraphs\ParagraphsBehaviorInterface[]
    *   Array of the enabled plugins as instances.
    */
   public function getEnabledBehaviorPlugins();
diff --git a/src/Plugin/Field/FieldWidget/ParagraphsWidget.php b/src/Plugin/Field/FieldWidget/ParagraphsWidget.php
index 6c5903f..85b6ed4 100644
--- a/src/Plugin/Field/FieldWidget/ParagraphsWidget.php
+++ b/src/Plugin/Field/FieldWidget/ParagraphsWidget.php
@@ -221,6 +221,7 @@ class ParagraphsWidget extends WidgetBase {
     $parents = $element['#field_parents'];
     $info = [];
 
+    /** @var \Drupal\paragraphs\Entity\Paragraph $paragraphs_entity */
     $paragraphs_entity = NULL;
     $host = $items->getEntity();
     $widget_state = static::getWidgetState($parents, $field_name, $form_state);
@@ -621,13 +622,37 @@ class ParagraphsWidget extends WidgetBase {
 
       if ($item_mode == 'edit') {
         $display->buildForm($paragraphs_entity, $element['subform'], $form_state);
+        // Get the field definitions of the paragraphs_entity.
+        // We need them to filter out entity reference revisions fields that
+        // reference paragraphs, cause otherwise we have problems with showing
+        // and hiding the right fields in nested paragraphs.
+        $field_definitions = $paragraphs_entity->getFieldDefinitions();
+
         foreach (Element::children($element['subform']) as $field) {
+          // Do a check if we have to add a class to the form element. We need
+          // those classes (paragraphs-content and paragraphs-behavior) to show
+          // and hide elements, depending of the active perspective.
+          $omit_class = FALSE;
+          if (isset($field_definitions[$field])) {
+            $type = $field_definitions[$field]->getType();
+            if ($type == 'entity_reference_revisions') {
+              // Check if we are referencing paragraphs.
+              $target_entity_type = $field_definitions[$field]->get('entity_type');
+              if ($target_entity_type && $target_entity_type == 'paragraph') {
+                $omit_class = TRUE;
+              }
+            }
+          }
+
           if ($paragraphs_entity->hasField($field)) {
+            if (!$omit_class) {
+              $element['subform'][$field]['#attributes']['class'][] = 'paragraphs-content';
+            }
             $translatable = $paragraphs_entity->{$field}->getFieldDefinition()->isTranslatable();
             if ($translatable) {
               $element['subform'][$field]['widget']['#after_build'][] = [
                 static::class,
-                'removeTranslatabilityClue'
+                'removeTranslatabilityClue',
               ];
             }
           }
@@ -637,11 +662,17 @@ class ParagraphsWidget extends WidgetBase {
         $paragraphs_type = $paragraphs_entity->getParagraphType();
         if ($paragraphs_type) {
           foreach ($paragraphs_type->getEnabledBehaviorPlugins() as $plugin_id => $plugin) {
-            $element['behavior_plugins'][$plugin_id] = [];
+            $element['behavior_plugins'][$plugin_id] = [
+              '#type' => 'container',
+              '#group' => implode('][', array_merge($element_parents, ['paragraph_behavior'])),
+            ];
             $subform_state = SubformState::createForSubform($element['behavior_plugins'][$plugin_id], $form, $form_state);
             if ($plugin_form = $plugin->buildBehaviorForm($paragraphs_entity, $element['behavior_plugins'][$plugin_id], $subform_state)) {
               $element['behavior_plugins'][$plugin_id] = $plugin_form;
             }
+            // Add the paragraphs-behavior class, so that we are able to show
+            // and hide behavior fields, depending on the active perspective.
+            $element['behavior_plugins'][$plugin_id]['#attributes']['class'][] = 'paragraphs-behavior';
           }
         }
       }
@@ -784,9 +815,20 @@ class ParagraphsWidget extends WidgetBase {
     $description = FieldFilteredMarkup::create(\Drupal::token()->replace($this->fieldDefinition->getDescription()));
 
     $elements = array();
+    $tabs = '';
     $this->fieldIdPrefix = implode('-', array_merge($this->fieldParents, array($field_name)));
     $this->fieldWrapperId = Html::getUniqueId($this->fieldIdPrefix . '-add-more-wrapper');
-    $elements['#prefix'] = '<div id="' . $this->fieldWrapperId . '">';
+
+    // If the parent entity is paragraph add the nested class if not then add
+    // the perspective tabs.
+    $field_prefix = strtr($this->fieldIdPrefix, '_', '-');
+    if ($max > 0 && $items->getEntity()->getEntityTypeId() != 'paragraph') {
+      $tabs = '<ul class="paragraphs-tabs tabs primary clearfix"><li id="content" class="tabs__tab is-active"><a href="#' . $field_prefix . '-values">Content</a></li><li id="behavior" class="tabs__tab"><a href="#' . $field_prefix . '-values">Behavior</a></li></ul>';
+    }
+    else {
+      $form['#attributes']['class'][] = 'paragraphs-nested';
+    }
+    $elements['#prefix'] = '<div class="is-horizontal paragraphs-tabs-wrapper" id="' . $this->fieldWrapperId . '">' . $tabs;
     $elements['#suffix'] = '</div>';
 
     $field_state['ajax_wrapper_id'] = $this->fieldWrapperId;
@@ -1184,7 +1226,7 @@ class ParagraphsWidget extends WidgetBase {
     // Go one level up in the form, to the widgets container.
     $element = NestedArray::getValue($form, array_slice($button['#array_parents'], 0, -4));
 
-    $element['#prefix'] = '<div class="ajax-new-content">' . (isset($element['#prefix']) ? $element['#prefix'] : '');
+    $element['#prefix'] = '<div clast[s="ajax-new-content">' . (isset($element['#prefix']) ? $element['#prefix'] : '');
     $element['#suffix'] = (isset($element['#suffix']) ? $element['#suffix'] : '') . '</div>';
 
     return $element;
@@ -1283,12 +1325,12 @@ class ParagraphsWidget extends WidgetBase {
             $paragraphs_entity->set($langcode_key, $form_state->get('langcode'));
           }
         }
-        if (isset($item['behavior_plugins'])) {
+        if (isset($item['subform'])) {
           // Submit all enabled behavior plugins.
           $paragraphs_type = $paragraphs_entity->getParagraphType();
           foreach ($paragraphs_type->getEnabledBehaviorPlugins() as $plugin_id => $plugin_values) {
-            if (!isset($item['behavior_plugins'][$plugin_id])) {
-              $item['behavior_plugins'][$plugin_id] = [];
+            if (!isset($item['subform'][$plugin_id])) {
+              $item['subform'][$plugin_id] = [];
             }
             $subform_state = SubformState::createForSubform($element[$delta]['behavior_plugins'][$plugin_id], $form_state->getCompleteForm(), $form_state);
             $plugin_values->submitBehaviorForm($paragraphs_entity, $element[$delta]['behavior_plugins'][$plugin_id], $subform_state);
diff --git a/src/Tests/Experimental/ParagraphsExperimentalBehaviorsTest.php b/src/Tests/Experimental/ParagraphsExperimentalBehaviorsTest.php
index 7a3d76b..7d62ded 100644
--- a/src/Tests/Experimental/ParagraphsExperimentalBehaviorsTest.php
+++ b/src/Tests/Experimental/ParagraphsExperimentalBehaviorsTest.php
@@ -75,13 +75,13 @@ class ParagraphsExperimentalBehaviorsTest extends ParagraphsExperimentalTestBase
 
     // Create a node with a Paragraph.
     $this->drupalGet('node/add/paragraphed_test');
-    $this->assertFieldByName('field_paragraphs[0][behavior_plugins][test_text_color][text_color]', 'green');
+    $this->assertFieldByName('field_paragraphs[0][subform][test_text_color][text_color]', 'green');
     // Setting a not allowed value in the text color plugin text field.
     $plugin_text = 'green';
     $edit = [
       'title[0][value]' => 'paragraphs_plugins_test',
       'field_paragraphs[0][subform][field_text][0][value]' => 'amazing_plugin_test',
-      'field_paragraphs[0][behavior_plugins][test_text_color][text_color]' => $plugin_text,
+      'field_paragraphs[0][subform][test_text_color][text_color]' => $plugin_text,
     ];
     $this->drupalPostForm(NULL, $edit, t('Save and publish'));
     // Asserting that the error message is shown.
@@ -89,7 +89,7 @@ class ParagraphsExperimentalBehaviorsTest extends ParagraphsExperimentalTestBase
     // Updating the text color to an allowed value.
     $plugin_text = 'red';
     $edit = [
-      'field_paragraphs[0][behavior_plugins][test_text_color][text_color]' => $plugin_text,
+      'field_paragraphs[0][subform][test_text_color][text_color]' => $plugin_text,
     ];
     $this->drupalPostForm(NULL, $edit, t('Save and publish'));
     // Assert that the class has been added to the element.
@@ -97,21 +97,21 @@ class ParagraphsExperimentalBehaviorsTest extends ParagraphsExperimentalTestBase
 
     $this->clickLink('Edit');
     // Assert the plugin fields populate the stored values.
-    $this->assertFieldByName('field_paragraphs[0][behavior_plugins][test_text_color][text_color]', $plugin_text);
+    $this->assertFieldByName('field_paragraphs[0][subform][test_text_color][text_color]', $plugin_text);
 
     // Update the value of both plugins.
     $updated_text = 'blue';
     $edit = [
-      'field_paragraphs[0][behavior_plugins][test_text_color][text_color]' => $updated_text,
-      'field_paragraphs[0][behavior_plugins][test_bold_text][bold_text]' => TRUE,
+      'field_paragraphs[0][subform][test_text_color][text_color]' => $updated_text,
+      'field_paragraphs[0][subform][test_bold_text][bold_text]' => TRUE,
     ];
     $this->drupalPostForm(NULL, $edit, t('Save and keep published'));
     $this->assertNoRaw('class="red_plugin_text');
     $this->assertRaw('class="blue_plugin_text bold_plugin_text');
     $this->clickLink('Edit');
     // Assert the plugin fields populate the stored values.
-    $this->assertFieldByName('field_paragraphs[0][behavior_plugins][test_text_color][text_color]', $updated_text);
-    $this->assertFieldByName('field_paragraphs[0][behavior_plugins][test_bold_text][bold_text]', TRUE);
+    $this->assertFieldByName('field_paragraphs[0][subform][test_text_color][text_color]', $updated_text);
+    $this->assertFieldByName('field_paragraphs[0][subform][test_bold_text][bold_text]', TRUE);
 
     // Test plugin applicability. Add a paragraph type.
     $paragraph_type = 'text_paragraph_test';
diff --git a/src/Tests/FunctionalJavascript/ParagraphsExperimentalEditPerspectivesUiTest.php b/src/Tests/FunctionalJavascript/ParagraphsExperimentalEditPerspectivesUiTest.php
new file mode 100644
index 0000000..d13de0d
--- /dev/null
+++ b/src/Tests/FunctionalJavascript/ParagraphsExperimentalEditPerspectivesUiTest.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace Drupal\Tests\field_group\FunctionalJavascript;
+
+use Drupal\Component\Utility\Unicode;
+use Drupal\Core\Entity\Display\EntityFormDisplayInterface;
+use Drupal\Core\Entity\Entity\EntityFormDisplay;
+use Drupal\FunctionalJavascriptTests\JavascriptTestBase;
+use Drupal\node\Entity\NodeType;
+
+/**
+ * Test field_group user interface.
+ *
+ * @group field_group
+ */
+class ParagraphsExperimentalEditPerspectivesUiTest extends JavascriptTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('node', 'paragraphs', 'paragraphs_demo');
+
+  /**
+   * @var string
+   */
+  protected $nodeType;
+
+  public function setUp() {
+    parent::setUp();
+
+    // Create test user.
+    $admin_user = $this->drupalCreateUser(array('access content', 'administer content types', 'administer node fields', 'administer node form display', 'administer node display', 'bypass node access'));
+    $this->drupalLogin($admin_user);
+
+  }
+
+}
