design-themes/theme_yes/views/snippets/s_call_to_action.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

<template id="s_call_to_action" inherit_id="website.s_call_to_action">
    <xpath expr="//section" position="attributes">
        <attribute name="style" add="background-image: url('/web/image/website.s_parallax_default_image');" separator=";"/>
        <attribute name="class" add="oe_img_bg o_bg_img_center" separator=" "/>
    </xpath>
    <xpath expr="//div[hasclass('container')]" position="before">
        <div class="o_we_bg_filter bg-black-25"/>
    </xpath>
    <!-- Title -->
    <xpath expr="//h3" position="replace">
        <h2>Discover how we can help you<br/>making this day unforgettable.</h2>
    </xpath>
    <!-- Paragraph -->
    <xpath expr="//p" position="replace">
        <p><br/></p>
    </xpath>
    <!-- CTA -->
    <xpath expr="//p" position="after">
        <a t-att-href="cta_btn_href" class="btn btn-primary btn-lg"><t t-esc="cta_btn_text">Contact us</t></a>
    </xpath>
    <!-- Remove right-side button -->
    <xpath expr="//div[hasclass('col-lg-3')]" position="replace"/>
</template>

</odoo>