Hii,

Enable Developer Mode in Odoo.

Go to your website page → Click Edit → Select the block showing reversed order.

Click the HTML/CSS icon (</>) or go to Customize → HTML/CSS/JS Editor.

Add This CSS to Fix the Mobile Order
@media (max-width: 768px) {

    .your-custom-class-or-section {

        flex-direction: column !important;

    }

}

Replace .your-custom-class-or-section with the actual class name of the section or block where the order is reversed.