design-themes/theme_clean/views/snippets/s_cover.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <template id="s_cover" inherit_id="website.s_cover">
        <!-- Section -->
        <xpath expr="//section" position="attributes">
            <attribute name="class" add="o_full_screen_height" separator=" "/>
            <attribute name="data-oe-shape-data">{"shape":"web_editor/Origins/12","colors":{"c3":"#e5edf2","c5":"#E5EDF2"},"flip":[]}</attribute>
        </xpath>
        <!-- Title & Paragraph -->
        <xpath expr="//div[hasclass('container')]" position="replace">
            <div class="container s_allow_columns text-center">
                <h1>
                    <font style="font-size: 62px;"><b>Sell from your couch</b></font>
                </h1>
                <p class="lead">
                    Make your finances reach a new level with our online management system.<br/>
                    Track every penny, directly from the confort of your home.
                </p>
            </div>
        </xpath>
        <!-- Shape -->
        <xpath expr="//section//*[last()]" position="after">
            <div class="o_we_shape o_web_editor_Origins_07"/>
        </xpath>
    </template>
</odoo>