There is a slider on pure css ... How can I add left / right buttons to it?

Question

css

The slider works fine, but it automatically scrolls through the images in time interval due to animation.
The slider
itself - Is it possible to add buttons to it, so that, in addition to this "automatic", it would be possible to click it, how to speed up the animation, thereby controlling the slider?
-Either (it can be better), do not use the animation in automatic mode, but somehow control the animation with the left / right buttons
Thank you!

Answer 1

-Is it possible to add buttons to it, so that, in addition to this "automatic", it would be possible to click it, how to speed up the animation, thereby controlling the slider?

Can