design-themes/theme_real_estate/views/snippets/s_masonry_block.xml

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

<template id="s_masonry_block" inherit_id="website.s_masonry_block" name="Masonry">
    <xpath expr="//section" position="attributes">
        <attribute name="class" remove="pt48 pb48" separator=" "/>
        <attribute name="data-masonry-template">default_reversed</attribute>
    </xpath>
    <xpath expr="//section/div" position="attributes">
        <attribute name="class" remove="container" add="container-fluid" separator=" "/>
    </xpath>
    <xpath expr="//section/div" position="replace" mode="inner">
        <t t-call="website.s_masonry_block_reversed_template"/>
    </xpath>
</template>

</odoo>