Filter testimonial to show on page

[RafaelMachado]

Hi people, I’m new here

I’m building a website for a client and I need to do a specific filter, where will show a testimonial according to the brand user to click.

I’ve created a dynamic filter with MixItUp3, and it is working perfectly:

BUT, when the page loads all testimonials come open:

How could I fix to show just one testimonial when the page load?

Tks

[Siton_Systems (Ezra Siton)]

var mixer = mixitup(containerEl, {
    load: {
        filter: '.category-2'
    }
});

Filtering and Sorting on Load – Tutorials | KunkaLabs

[RafaelMachado]

Thank you so much @Siton_Systems