Active slide in va-accordion, how to make active slide?

Question

css

Good evening!
There is a vertical slider truequery.ru/g_vertical_slider_with_jquery.html , you need to make the slide active when you open it, when the page opens the slides are not active, the slide is active only if you select it, how to make the "management" slide active?

Answer 1

I tried to find documentation on this VAccardIon - without success.
Here's the simplest: after you initialize the slider. P.S. there is
In theory, it should open the first one if you put instead of "-1" - "1", but even no.
P.S.S. I would advise you to use something more popular (new) for slides slick, owl, etc. But there you have to play with styles.