design-themes/theme_notes/views/snippets/s_image_gallery.xml

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

<template id="s_image_gallery" inherit_id="website.s_image_gallery">
    <!-- Section -->
    <xpath expr="//section" position="attributes">
        <attribute name="class" add="s_image_gallery_arrows_boxed" remove="s_image_gallery_arrows_default" separator=" "/>
    </xpath>
</template>

<template id="s_images_wall" inherit_id="website.s_images_wall">
    <xpath expr="//section" position="attributes">
        <attribute name="class" add="pb80" remove="pt24 pb24" separator=" "/>
        <attribute name="data-oe-shape-data" add="{'shape':'web_editor/Bold/14','colors':{'c5':'o-color-1','c1':'o-color-1'},'showOnMobile':false,'shapeAnimationSpeed':'0'}"/>
    </xpath>
    <xpath expr="//div[hasclass('container')]" position="before">
        <div class="o_we_shape o_web_editor_Bold_14" style="background-image: url('/web_editor/shape/web_editor/Bold/14.svg?c5=o-color-1&amp;c1=o-color-1');"/>
    </xpath>
    <xpath expr="//div[hasclass('row')]/." position="before">
        <div class="col-lg-12">
            <h2 style="text-align: center;"><span class="o_text_highlight o_text_highlight_underline o_translate_inline" style="--text-highlight-color: var(--o-color-4); --text-highlight-width: 3px;">Band Gallery</span></h2>
            <p>
                <br/>
            </p>
        </div>
    </xpath>
    <!-- First image -->
    <xpath expr="//img" position="attributes">
        <attribute name="src">/web/image/website.library_image_19</attribute>
    </xpath>
    <!-- Third image -->
    <xpath expr="(//img)[3]" position="attributes">
        <attribute name="src">/web/image/website.s_cover_default_image</attribute>
    </xpath>
</template>

</odoo>