[ADD] Website: features blocks

task-3733828

closes odoo/documentation#8173

Signed-off-by: Xavier Platteau (xpl) <xpl@odoo.com>

content/applications/websites/website/web_design/building_blocks.rst

@@ -147,5 +147,6 @@ Click the pen icon to edit their name.
    :titlesonly:
 
    building_blocks/structure
+   building_blocks/features
    building_blocks/dynamic_content
    building_blocks/inner_content

content/applications/websites/website/web_design/building_blocks/features.rst

@@ -0,0 +1,40 @@
+========
+Features
+========
+
+The :guilabel:`Features` :doc:`building blocks <../building_blocks>` allow you to list multiple
+items next to each other.
+
+The :ref:`Table of Content <features/table_of_content>` and the :ref:`Call to Action
+<features/call_to_action>` blocks are presented below.
+
+.. note::
+   To add a building block, click :guilabel:`Edit`, select the desired building block under the
+   :guilabel:`Blocks` tab, and drag and drop it onto the page. To access its settings, click it and
+   go to the :guilabel:`Customize` tab, where the available options depend on the type of block
+   selected.
+
+.. _features/table_of_content:
+
+Table of content
+================
+
+The :guilabel:`Table of Content` block is used to list many different items grouped under several
+headings. A clickable index is available to navigate quickly between the different categories.
+
+.. image:: features/table-of-content.png
+   :alt: The default Table of Content block
+
+.. _features/call_to_action:
+
+Call to action
+==============
+
+The :guilabel:`Call to Action` block is used to prompt visitors to take a specific action, such
+as signing up for a newsletter or contacting you.
+
+.. image:: features/call-to-action.png
+   :alt: The default Call to Action block
+
+To change the button's link, select it, go to the :guilabel:`Customize` tab's :guilabel:`Inline
+Text` section and replace `/contactus` with another URL.