odoo_theme/theme_treehouse/views/snippets/s_text_block.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>
    <template id="s_text_block" inherit_id="website.s_text_block">
        <!-- Section -->
        <xpath expr="//section" position="attributes">
            <attribute name="class" add="pt96 pb96" remove="pt32 pb32" separator=" "/>
        </xpath>
        <!-- Content -->
        <xpath expr="//div[hasclass('container')]" position="attributes">
            <attribute name="class" add="o_container_small" remove="container" separator=" "/>
        </xpath>
    </template>
</odoo>