diff --git a/core/modules/views/templates/views-exposed-form.html.twig b/core/modules/views/templates/views-exposed-form.html.twig
index 5a34f2f..3fdc576 100644
--- a/core/modules/views/templates/views-exposed-form.html.twig
+++ b/core/modules/views/templates/views-exposed-form.html.twig
@@ -18,6 +18,6 @@
   #}
 {{ q }}
 {% endif %}
-<div class="views-exposed-form clearfix">
+<div>
   {{ form }}
 </div>
diff --git a/core/modules/views/templates/views-mini-pager.html.twig b/core/modules/views/templates/views-mini-pager.html.twig
index 5fd95dc..7be4d32 100644
--- a/core/modules/views/templates/views-mini-pager.html.twig
+++ b/core/modules/views/templates/views-mini-pager.html.twig
@@ -12,6 +12,6 @@
  */
 #}
 {% if items %}
-  <h2 class="visually-hidden">{{ 'Pages'|t }}</h2>
+  <h2>{{ 'Pages'|t }}</h2>
   {{ items }}
 {% endif %}
diff --git a/core/modules/views/templates/views-more.html.twig b/core/modules/views/templates/views-more.html.twig
index b161a65..85725cb 100644
--- a/core/modules/views/templates/views-more.html.twig
+++ b/core/modules/views/templates/views-more.html.twig
@@ -11,4 +11,4 @@
  * @ingroup themeable
  */
 #}
-<a href="{{ more_url }}" class="more-link">{{ link_text }}</a>
+<a href="{{ more_url }}">{{ link_text }}</a>
diff --git a/core/modules/views/templates/views-view-grouping.html.twig b/core/modules/views/templates/views-view-grouping.html.twig
index f06e6b6..2418587 100644
--- a/core/modules/views/templates/views-view-grouping.html.twig
+++ b/core/modules/views/templates/views-view-grouping.html.twig
@@ -16,7 +16,7 @@
  * @ingroup themeable
  */
 #}
-<div class="view-grouping">
-  <div class="view-grouping-header">{{ title }}</div>
-  <div class="view-grouping-content">{{ content }}</div>
+<div>
+  <div>{{ title }}</div>
+  <div>{{ content }}</div>
 </div>
diff --git a/core/modules/views/templates/views-view-summary-unformatted.html.twig b/core/modules/views/templates/views-view-summary-unformatted.html.twig
index 9120dd4..7d41fcc 100644
--- a/core/modules/views/templates/views-view-summary-unformatted.html.twig
+++ b/core/modules/views/templates/views-view-summary-unformatted.html.twig
@@ -20,7 +20,7 @@
  */
 #}
 {% for row in rows  %}
-  {{ options.inline ? '<span' : '<div' }} class="views-summary views-summary-unformatted">
+  {{ options.inline ? '<span' : '<div' }}>
   {% if row.separator -%}
     {{ row.separator }}
   {%- endif %}
diff --git a/core/modules/views/templates/views-view-summary.html.twig b/core/modules/views/templates/views-view-summary.html.twig
index 4d8ed8f..3773a0d 100644
--- a/core/modules/views/templates/views-view-summary.html.twig
+++ b/core/modules/views/templates/views-view-summary.html.twig
@@ -19,8 +19,8 @@
  * @ingroup themeable
  */
 #}
-<div class="item-list">
-  <ul class="views-summary">
+<div>
+  <ul>
   {% for row in rows %}
     <li><a href="{{ row.url }}"{{ row.attributes }}>{{ row.link }}</a>
       {% if options.count %}
diff --git a/core/modules/views/templates/views-view.html.twig b/core/modules/views/templates/views-view.html.twig
index f839ef9..59b1b0e 100644
--- a/core/modules/views/templates/views-view.html.twig
+++ b/core/modules/views/templates/views-view.html.twig
@@ -44,27 +44,27 @@
   {% endif %}
   {{ title_suffix }}
   {% if header %}
-    <div class="view-header">
+    <div>
       {{ header }}
     </div>
   {% endif %}
   {% if exposed %}
-    <div class="view-filters">
+    <div>
       {{ exposed }}
     </div>
   {% endif %}
   {% if attachment_before %}
-    <div class="attachment attachment-before">
+    <div>
       {{ attachment_before }}
     </div>
   {% endif %}
 
   {% if rows %}
-    <div class="view-content">
+    <div>
       {{ rows }}
     </div>
   {% elseif empty %}
-    <div class="view-empty">
+    <div>
       {{ empty }}
     </div>
   {% endif %}
@@ -73,7 +73,7 @@
     {{ pager }}
   {% endif %}
   {% if attachment_after %}
-    <div class="attachment attachment-after">
+    <div>
       {{ attachment_after }}
     </div>
   {% endif %}
@@ -81,12 +81,12 @@
     {{ more }}
   {% endif %}
   {% if footer %}
-    <div class="view-footer">
+    <div>
       {{ footer }}
     </div>
   {% endif %}
   {% if feed_icon %}
-    <div class="feed-icon">
+    <div>
       {{ feed_icon }}
     </div>
   {% endif %}
diff --git a/core/modules/views/templates/views-exposed-form.html.twig b/core/themes/classy/templates/views-exposed-form.html.twig
similarity index 100%
copy from core/modules/views/templates/views-exposed-form.html.twig
copy to core/themes/classy/templates/views-exposed-form.html.twig
diff --git a/core/modules/views/templates/views-mini-pager.html.twig b/core/themes/classy/templates/views-mini-pager.html.twig
similarity index 100%
copy from core/modules/views/templates/views-mini-pager.html.twig
copy to core/themes/classy/templates/views-mini-pager.html.twig
diff --git a/core/modules/views/templates/views-more.html.twig b/core/themes/classy/templates/views-more.html.twig
similarity index 100%
copy from core/modules/views/templates/views-more.html.twig
copy to core/themes/classy/templates/views-more.html.twig
diff --git a/core/themes/classy/templates/views-view-field.html.twig b/core/themes/classy/templates/views-view-field.html.twig
new file mode 100644
index 0000000..a058548
--- /dev/null
+++ b/core/themes/classy/templates/views-view-field.html.twig
@@ -0,0 +1,27 @@
+{#
+/**
+ * @file
+ * Default theme implementation for a single field in a view.
+ *
+ * It is not actually used in default views, as this is registered as a theme
+ * function which has better performance. For single overrides, the template is
+ * perfectly okay.
+ *
+ * Available variables:
+ * - view: The view that the field belongs to.
+ * - field: The field handler that can process the input.
+ * - row: The raw result of the database query that generated this field.
+ * - output: The processed output that will normally be used.
+ *
+ * When fetching output from the row this construct should be used:
+ * data = row[field.field_alias]
+ *
+ * The above will guarantee that you'll always get the correct data, regardless
+ * of any changes in the aliasing that might happen if the view is modified.
+ *
+ * @see template_preprocess_views_view_field()
+ *
+ * @ingroup themeable
+ */
+#}
+{{ output }}
diff --git a/core/themes/classy/templates/views-view-fields.html.twig b/core/themes/classy/templates/views-view-fields.html.twig
new file mode 100644
index 0000000..a8aa00b
--- /dev/null
+++ b/core/themes/classy/templates/views-view-fields.html.twig
@@ -0,0 +1,41 @@
+{#
+/**
+ * @file
+ * Default view template to display all the fields in a row.
+ *
+ * Available variables:
+ * - view: The view in use.
+ * - fields: A list of fields, each one contains:
+ *   - content: The output of the field.
+ *   - raw: The raw data for the field, if it exists. This is NOT output safe.
+ *   - class: The safe class ID to use.
+ *   - handler: The Views field handler controlling this field.
+ *   - inline: Whether or not the field should be inline.
+ *   - inline_html: Either div or span based on the 'inline' flag.
+ *   - wrapper_prefix: A complete wrapper containing the inline_html to use.
+ *   - wrapper_suffix: The closing tag for the wrapper.
+ *   - separator: An optional separator that may appear before a field.
+ *   - label: The field's label text.
+ *   - label_html: The full HTML of the label to use including configured
+ *     element type.
+ * - row: The raw result from the query, with all data it fetched.
+ *
+ * @see template_preprocess_views_view_fields()
+ *
+ * @ingroup themeable
+ */
+#}
+<!--
+THIS FILE IS NOT USED AND IS HERE AS A STARTING POINT FOR CUSTOMIZATION ONLY.
+See http://api.drupal.org/api/function/theme_views_view_fields/8 for details.
+After copying this file to your theme's folder and customizing it, remove this
+HTML comment.
+-->
+{% for field in fields %}
+  {{ field.separator }}
+
+  {{ field.wrapper_prefix }}
+    {{ field.label_html }}
+    {{ field.content }}
+  {{ field.wrapper_suffix }}
+{% endfor %}
diff --git a/core/themes/classy/templates/views-view-grid.html.twig b/core/themes/classy/templates/views-view-grid.html.twig
new file mode 100644
index 0000000..a5a813c
--- /dev/null
+++ b/core/themes/classy/templates/views-view-grid.html.twig
@@ -0,0 +1,50 @@
+{#
+/**
+ * @file
+ * Default theme implementation for views to display rows in a grid.
+ *
+ * Available variables:
+ * - attributes: HTML attributes for the wrapping element.
+ * - title: The title of this group of rows.
+ * - view: The view object.
+ * - rows: The rendered view results.
+ * - options: The view plugin style options.
+ * - items: A list of grid items. Each item contains a list of rows or columns.
+ *   The order in what comes first (row or column) depends on which alignment
+ *   type is chosen (horizontal or vertical).
+ *   - attributes: HTML attributes for each row or column.
+ *   - content: A list of columns or rows. Each row or column contains:
+ *     - attributes: HTML attributes for each row or column.
+ *     - content: The row or column contents.
+ *
+ * @see template_preprocess_views_view_grid()
+ *
+ * @ingroup themeable
+ */
+#}
+{% if title %}
+  <h3>{{ title }}</h3>
+{% endif %}
+<div{{ attributes }}>
+{% if options.alignment == 'horizontal' %}
+  {% for row in items %}
+  <div{{ row.attributes }}>
+    {% for column in row.content %}
+    <div{{ column.attributes }}>
+      {{ column.content }}
+    </div>
+    {% endfor %}
+  </div>
+  {% endfor %}
+{% else %}
+  {% for column in items %}
+  <div{{ column.attributes }}>
+    {% for row in column.content %}
+      <div{{ row.attributes }}>
+        {{ row.content }}
+      </div>
+    {% endfor %}
+    </div>
+  {% endfor %}
+{% endif %}
+</div>
diff --git a/core/modules/views/templates/views-view-grouping.html.twig b/core/themes/classy/templates/views-view-grouping.html.twig
similarity index 100%
copy from core/modules/views/templates/views-view-grouping.html.twig
copy to core/themes/classy/templates/views-view-grouping.html.twig
diff --git a/core/themes/classy/templates/views-view-list.html.twig b/core/themes/classy/templates/views-view-list.html.twig
new file mode 100644
index 0000000..8de787c
--- /dev/null
+++ b/core/themes/classy/templates/views-view-list.html.twig
@@ -0,0 +1,38 @@
+{#
+/**
+ * @file
+ * Default theme implementation for a view template to display a list of rows.
+ *
+ * Available variables:
+ * - attributes: HTML attributes for the container.
+ * - rows: A list of rows for this list.
+ *   - attributes: The row's HTML attributes.
+ *   - content: The row's contents.
+ * - title: The title of this group of rows. May be empty.
+ * - list: @todo.
+ *   - type: Starting tag will be either a ul or ol.
+ *   - attributes: HTML attributes for the list element.
+ *
+ * @see template_preprocess_views_view_list()
+ *
+ * @ingroup themeable
+ */
+#}
+{% if attributes -%}
+  <div{{ attributes }}>
+{% endif %}
+  {% if title %}
+    <h3>{{ title }}</h3>
+  {% endif %}
+
+  <{{ list.type }}{{ list.attributes }}>
+
+    {% for row in rows %}
+      <li{{ row.attributes }}>{{ row.content }}</li>
+    {% endfor %}
+
+  </{{ list.type }}>
+
+{% if attributes -%}
+  </div>
+{% endif %}
diff --git a/core/themes/classy/templates/views-view-mapping-test.html.twig b/core/themes/classy/templates/views-view-mapping-test.html.twig
new file mode 100644
index 0000000..eacaa84
--- /dev/null
+++ b/core/themes/classy/templates/views-view-mapping-test.html.twig
@@ -0,0 +1,14 @@
+{#
+/**
+ * @file
+ * Default theme implementation for testing the mapping row style.
+ *
+ * Available variables:
+ * - element: The view content.
+ *
+ * @see template_preprocess_views_view_mapping_test()
+ *
+ * @ingroup themeable
+ */
+#}
+{{ element }}
diff --git a/core/themes/classy/templates/views-view-opml.html.twig b/core/themes/classy/templates/views-view-opml.html.twig
new file mode 100644
index 0000000..0564bf6
--- /dev/null
+++ b/core/themes/classy/templates/views-view-opml.html.twig
@@ -0,0 +1,25 @@
+{#
+/**
+ * @file
+ * Default template for feed displays that use the OPML style.
+ *
+ * Available variables:
+ * - title: The title of the feed (as set in the view).
+ * - updated: The modified date of the feed.
+ * - items: The feed items themselves.
+ *
+ * @see template_preprocess_views_view_opml()
+ *
+ * @ingroup themeable
+ */
+#}
+<?xml version="1.0" encoding="utf-8" ?>
+<opml version="2.0">
+  <head>
+    <title>{{ title }}</title>
+    <dateModified>{{ updated }}</dateModified>
+  </head>
+  <body>
+    {{ items }}
+  </body>
+</opml>
diff --git a/core/themes/classy/templates/views-view-row-opml.html.twig b/core/themes/classy/templates/views-view-row-opml.html.twig
new file mode 100644
index 0000000..431dc5c
--- /dev/null
+++ b/core/themes/classy/templates/views-view-row-opml.html.twig
@@ -0,0 +1,14 @@
+{#
+/**
+ * @file
+ * Default theme implementation to display an item in a views OPML feed.
+ *
+ * Available variables:
+ * - attributes: Attributes for outline element.
+ *
+ * @see template_preprocess_views_view_row_opml()
+ *
+ * @ingroup themeable
+ */
+#}
+    <outline{{ attributes }}/>
diff --git a/core/themes/classy/templates/views-view-row-rss.html.twig b/core/themes/classy/templates/views-view-row-rss.html.twig
new file mode 100644
index 0000000..e07244c
--- /dev/null
+++ b/core/themes/classy/templates/views-view-row-rss.html.twig
@@ -0,0 +1,22 @@
+{#
+/**
+ * @file
+ * Default theme implementation to display an item in a views RSS feed.
+ *
+ * Available variables:
+ * - title: RSS item title.
+ * - link: RSS item link.
+ * - description: RSS body text.
+ * - item_elements: RSS item elements rendered as XML (pubDate, creator, guid).
+ *
+ * @see template_preprocess_views_view_row_rss()
+ *
+ * @ingroup themeable
+ */
+#}
+  <item>
+    <title>{{ title }}</title>
+    <link>{{ link }}</link>
+    <description>{{ description }}</description>
+    {{ item_elements }}
+  </item>
diff --git a/core/themes/classy/templates/views-view-rss.html.twig b/core/themes/classy/templates/views-view-rss.html.twig
new file mode 100644
index 0000000..19b5097
--- /dev/null
+++ b/core/themes/classy/templates/views-view-rss.html.twig
@@ -0,0 +1,30 @@
+{#
+/**
+ * @file
+ * Default template for feed displays that use the RSS style.
+ *
+ * Available variables:
+ * - link: The link to the feed (the view path).
+ * - namespaces: The XML namespaces (added automatically).
+ * - title: The title of the feed (as set in the view).
+ * - description: The feed description (from feed settings).
+ * - langcode: The language encoding.
+ * - channel_elements: The formatted channel elements.
+ * - items: The feed items themselves.
+ *
+ * @see template_preprocess_views_view_rss()
+ *
+ * @ingroup themeable
+ */
+#}
+<?xml version="1.0" encoding="utf-8" ?>
+<rss version="2.0" xml:base="{{ link }}"{{ namespaces }}>
+  <channel>
+    <title>{{ title }}</title>
+    <link>{{ link }}</link>
+    <description>{{ description }}</description>
+    <language>{{ langcode }}</language>
+    {{ channel_elements }}
+    {{ items }}
+  </channel>
+</rss>
diff --git a/core/modules/views/templates/views-view-summary-unformatted.html.twig b/core/themes/classy/templates/views-view-summary-unformatted.html.twig
similarity index 100%
copy from core/modules/views/templates/views-view-summary-unformatted.html.twig
copy to core/themes/classy/templates/views-view-summary-unformatted.html.twig
diff --git a/core/modules/views/templates/views-view-summary.html.twig b/core/themes/classy/templates/views-view-summary.html.twig
similarity index 100%
copy from core/modules/views/templates/views-view-summary.html.twig
copy to core/themes/classy/templates/views-view-summary.html.twig
diff --git a/core/themes/classy/templates/views-view-table.html.twig b/core/themes/classy/templates/views-view-table.html.twig
new file mode 100644
index 0000000..6b0b26c
--- /dev/null
+++ b/core/themes/classy/templates/views-view-table.html.twig
@@ -0,0 +1,71 @@
+{#
+/**
+ * @file
+ * Default theme implementation for displaying a view as a table.
+ *
+ * Available variables:
+ * - attributes: Remaining HTML attributes for the element.
+ *   - class: HTML classes that can be used to style contextually through CSS.
+ * - title : The title of this group of rows.
+ * - header: The table header columns.
+ *   - attributes: Remaining HTML attributes for the element.
+ *   - content: HTML classes to apply to each header cell, indexed by
+ *   the header's key.
+ * - caption_needed: Is the caption tag needed.
+ * - caption: The caption for this table.
+ * - accessibility_description: Extended description for the table details.
+ * - accessibility_summary: Summary for the table details.
+ * - rows: Table row items. Rows are keyed by row number.
+ *   - attributes: HTML classes to apply to each row.
+ *   - columns: Row column items. Columns are keyed by column number.
+ *     - attributes: HTML classes to apply to each column.
+ *     - content: The column content.
+ *
+ * @see template_preprocess_views_view_table()
+ *
+ * @ingroup themeable
+ */
+#}
+<table{{ attributes }}>
+  {% if caption_needed %}
+    <caption>
+    {% if caption %}
+      {{ caption }}
+    {% else %}
+      {{ title }}
+    {% endif %}
+    {% if (summary is not empty) or (description is not empty) %}
+      <details>
+        {% if summary is not empty %}
+          <summary>{{ summary }}</summary>
+        {% endif %}
+        {% if description is not empty %}
+          {{ description }}
+        {% endif %}
+      </details>
+    {% endif %}
+    </caption>
+  {% endif %}
+  {% if header %}
+    <thead>
+      <tr>
+        {% for column in header %}
+          <th{{ column.attributes }} scope="col">
+            {{ column.content }}
+          </th>
+        {% endfor %}
+      </tr>
+    </thead>
+  {% endif %}
+  <tbody>
+    {% for row in rows %}
+      <tr{{ row.attributes }}>
+        {% for column in row.columns %}
+          <td{{ column.attributes }}>
+            {{ column.content }}
+          </td>
+        {% endfor %}
+      </tr>
+    {% endfor %}
+  </tbody>
+</table>
diff --git a/core/themes/classy/templates/views-view-unformatted.html.twig b/core/themes/classy/templates/views-view-unformatted.html.twig
new file mode 100644
index 0000000..e3fb2e3
--- /dev/null
+++ b/core/themes/classy/templates/views-view-unformatted.html.twig
@@ -0,0 +1,24 @@
+{#
+/**
+ * @file
+ * Default theme implementation to display a view of unformatted rows.
+ *
+ * Available variables:
+ * - title: The title of this group of rows. May be empty.
+ * - rows: A list of the view's row items.
+ *   - attributes: The row's HTML attributes.
+ *   - content: The row's content.
+ *
+ * @see template_preprocess_views_view_unformatted()
+ *
+ * @ingroup themeable
+ */
+#}
+{% if title %}
+  <h3>{{ title }}</h3>
+{% endif %}
+{% for row in rows %}
+  <div{{ row.attributes }}>
+    {{ row.content }}
+  </div>
+{% endfor %}
diff --git a/core/modules/views/templates/views-view.html.twig b/core/themes/classy/templates/views-view.html.twig
similarity index 100%
copy from core/modules/views/templates/views-view.html.twig
copy to core/themes/classy/templates/views-view.html.twig