<?xml version="1.0"?>
<!--
/**
 * Copyright © 2013-2017 Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <update handle="checkout_cart_item_renderers"/>
    <body>
        <referenceContainer name="content">
            <referenceContainer name="checkout.cart.items" as="with-items">
                <referenceContainer name="checkout.cart.container" htmlTag="div" htmlClass="cart-container row" before="-">
                    <referenceContainer name="cart.summary" label="Cart Summary Container" htmlTag="div" htmlClass="cart-summary col-sm-3 pull-right" after="-">
                        <block class="Magento\Framework\View\Element\Template" name="checkout.cart.summary.title" before="-" template="Magento_Theme::text.phtml">
                            <arguments>
                                <argument translate="true" name="text" xsi:type="string"></argument>
                                <argument name="tag" xsi:type="string">strong</argument>
                                <argument name="css_class" xsi:type="string"></argument>
                            </arguments>
                        </block>
                    </referenceContainer>
                </referenceContainer>
            </referenceContainer>
        </referenceContainer>
    </body>
</page>

<?xml version="1.0"?>
<!--
/**
 * Copyright © 2013-2017 Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
    <update handle="checkout_cart_item_renderers"/>
    <body>
        <referenceContainer name="content">
            <referenceContainer name="checkout.cart.items">
                <referenceContainer name="checkout.cart.container" htmlTag="div" htmlClass="cart-container row" before="-">
                    <referenceContainer name="cart.summary" label="Cart Summary Container" htmlTag="div" htmlClass="cart-summary col-sm-3 pull-right" after="-">
                        <block class="Magento\Framework\View\Element\Template" name="checkout.cart.summary.title" before="-" template="Magento_Theme::text.phtml">
                            <arguments>
                                <argument translate="true" name="text" xsi:type="string"></argument>
                                <argument name="tag" xsi:type="string">strong</argument>
                                <argument name="css_class" xsi:type="string"></argument>
                            </arguments>
                        </block>
                    </referenceContainer>
                </referenceContainer>
            </referenceContainer>
        </referenceContainer>
    </body>
</page>

Remove with-items as invalid reference
Remove with-items as invalid reference
