I want to add a Slideshow to my html codes

Question

automatic moving pictures in a slide

Answer 1

You can use Bootstrap. Carousel makes the slides automatic, as well. 4rontender's is a very good example of a slideshow too. I made one as well, but here's one I just found that is also Bootstrap carousel:
https://code.sololearn.com/WCN0USzs83nO/?ref=app

Answer 2

you can use marquee too