Question:
I wanted to make a slider which only shows 3 items a time, and after 5 seconds, slides them over by 3, showing 3 new items, with a smooth animations. I was trying to use the width of the repeater to tell it how much to slide, but I kept on getting an error code. Also, there doesn’t seem to be a simple animation for sliding over.
Product:
Wix Studio
What are you trying to achieve:
Make a repeater change items with a sliding animtations every 5 seconds
Hi, Yechiel_Cohen !!
If you don’t need to dynamically update items like in a repeater and simply want to display multiple fixed items in a slideshow of three at a time, it should be achievable. First, add a slideshow repeater in the editor. Within it, place a flexbox element (let’s assume it contains three boxes). You should then see the flexbox appearing on each slide item. Next, insert image elements into each of the three boxes in the flexbox, and click the “stretch button” at the top right of the image element to fit the images to the size of the boxes. 
At this point, the image elements should be displayed on all slides. However, you’ll likely notice that the same images are being repeated across all slides. To fix this, select the image elements on each slide, and use the “Change Image” option to assign different images to each one. This way, you can create a slideshow element where each slide displays unique images. Additionally, you can set the slideshow animation to run at your desired interval, such as every 5 seconds, all within the editor settings. 
any way I can do that to move over only by one?
Also, can I connect those to a dataset/collection?
If you want to move only one item, wouldn’t it simply be the same as using a standalone slideshow repeater? I think you can connect a slideshow repeater to a dataset. 
I want to still display 3 at a time, but every 5 seconds move it only 1 up, so that 2 of the 3 will still be the same, and the next time, only the last one will be the same as the originial 3