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Extend an Existing App
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You can extend a Lightning App by using community components or building your own.

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.. raw:: html

    <div class="display-card-container">
        <div class="row">

.. Add callout items below this line

.. displayitem::
   :header: Add more Components
   :description: Extend an App by adding a prebuilt component.
   :col_css: col-md-4
   :button_link: add_components/index.html
   :height: 150
   :tag: basic

.. displayitem::
   :header: Add a web user interface (UI)
   :description: Extend an App by adding a web user interface (UI)
   :col_css: col-md-4
   :button_link: add_web_ui/index.html
   :height: 150
   :tag: basic

.. displayitem::
   :header: Add a URL link
   :description: Extend an App by adding a web URL link
   :col_css: col-md-4
   :button_link: add_web_link.html
   :height: 150
   :tag: basic

.. displayitem::
   :header: Build a Component
   :description: Extend an App by building a Component
   :col_css: col-md-4
   :button_link: build_lightning_component/index.html
   :height: 150
   :tag: basic

.. displayitem::
   :header: Add a server
   :description: Extend an App by adding a server to a Component.
   :col_css: col-md-4
   :button_link: add_server/index.html
   :height: 150
   :tag: Intermediate


.. raw:: html

        </div>
    </div>
