Resolve "Implement Card Grid display format"

Closes #16 (closed)

src/Plugin/views/style/CardGrid.php

+<?php
+
+
+namespace Drupal\cern_display_formats\Plugin\views\style;
+
+use Drupal\core\form\FormStateInterface;
+use Drupal\views\Plugin\views\style\DefaultStyle;
+
+/**
+ * Style plugin rendering as Card Grid
+ *
+ * @ingroup views_style_plugins
+ *
+ * @ViewsStyle(
+ *   id = "card_grid",
+ *   title = @Translation("Card Grid"),
+ *   help = @Translation("Displays content as a Card Grid"),
+ *   theme = "views_view_unformatted",
+ *   display_types = {"normal"}
+ * )
+ */
+class CardGrid extends DefaultStyle {
+
+	protected $usesRowPlugin = true;
+
+	/**
+	 * Does the style plugin support custom css class for the rows.
+	 *
+	 * @var bool
+	 */
+	protected $usesRowClass = false;
+
+	protected $usesoptions = true;
+
+	protected $renderFields = true;
+
+
+}
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