--- /dev/null
+{#
+/**
+ * @file
+ * Default theme implementation to display a two-column layout.
+ *
+ * Available variables:
+ * - content: The content for this layout.
+ * - attributes: HTML attributes for the layout <div>.
+ *
+ * @ingroup themeable
+ */
+#}
+{%
+ set classes = [
+ 'layout',
+ 'layout--twocol',
+ ]
+%}
+{% if content %}
+ <div{{ attributes.addClass(classes) }}>
+ {% if content.top %}
+ <div {{ region_attributes.top.addClass('layout__region', 'layout__region--top') }}>
+ {{ content.top }}
+ </div>
+ {% endif %}
+
+ {% if content.first %}
+ <div {{ region_attributes.first.addClass('layout__region', 'layout__region--first') }}>
+ {{ content.first }}
+ </div>
+ {% endif %}
+
+ {% if content.second %}
+ <div {{ region_attributes.second.addClass('layout__region', 'layout__region--second') }}>
+ {{ content.second }}
+ </div>
+ {% endif %}
+
+ {% if content.bottom %}
+ <div {{ region_attributes.bottom.addClass('layout__region', 'layout__region--bottom') }}>
+ {{ content.bottom }}
+ </div>
+ {% endif %}
+ </div>
+{% endif %}