design-themes/theme_nano/views/snippets/s_carousel.xml

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

<template id="s_carousel" inherit_id="website.s_carousel">
    <!-- Carousel -->
    <xpath expr="//*[hasclass('s_carousel')]" position="attributes">
        <attribute name="class" add="carousel-fade bg-o-color-4" separator=" "/>
    </xpath>
    <!-- Slide #01 -->
    <xpath expr="//*[hasclass('carousel-content')][1]" position="attributes">
        <attribute name="class" add="col-lg-8 offset-lg-2 bg-black-50 text-center pt48 pb40" remove="col-lg-6" separator=" "/>
    </xpath>
    <!-- Slide #02 -->
    <xpath expr="//*[hasclass('s_hr')][1]" position="replace"/>
    <!-- Slide #03 -->
    <xpath expr="//*[hasclass('carousel-item')][3]" position="replace"/>
    <xpath expr="//*[@data-bs-slide-to='2']" position="replace"/>
</template>

</odoo>