Smooth cyclic slider - how to do it?

Question

JavaScript

I'm just starting to learn JavaScript and don't know how to solve the problem yet:
There is a block on the site:

Its HTML:

<section class="fr-trust-wrapper">
    <img src="img/clients/1.png" alt="Газпром" class="fr-trust-element">
    <img src="img/clients/2.png" alt="" class="fr-trust-element">
    <img src="img/clients/3.png" alt="" class="fr-trust-element">
    <img src="img/clients/4.png" alt="" class="fr-trust-element">
    <img src="img/clients/5.png" alt="" class="fr-trust-element">
    <img src="img/clients/6.png" alt="" class="fr-trust-element">
    <img src="img/clients/7.png" alt="" class="fr-trust-element">
    <img src="img/clients/8.png" alt="" class="fr-trust-element">
    <img src="img/clients/9.png" alt="" class="fr-trust-element">
    <img src="img/clients/10.png" alt="" class="fr-trust-element">
    <img src="img/clients/11.png" alt="" class="fr-trust-element">
    <img src="img/clients/13.png" alt="" class="fr-trust-element">
    <img src="img/clients/14.png" alt="" class="fr-trust-element">
    <img src="img/clients/15.png" alt="" class="fr-trust-element">
    <img src="img/clients/16.png" alt="" class="fr-trust-element">
    <img src="img/clients/17.png" alt="" class="fr-trust-element">
    <img src="img/clients/18.png" alt="" class="fr-trust-element">
    <img src="img/clients/19.png" alt="" class="fr-trust-element">
    <img src="img/clients/20.png" alt="" class="fr-trust-element">
    <img src="img/clients/21.png" alt="" class="fr-trust-element">
    <img src="img/clients/22.png" alt="" class="fr-trust-element">
    <img src="img/clients/12.png" alt="" class="fr-trust-element">
  </section>

It is necessary to make the pictures in the block scroll slowly from right to left, i.e. everyone was in the frame, but as soon as the first one on the left leaves, she immediately appears on the right and everyone moved in such a loop.
If possible, I would like not to break the html structure too much.

Answer 1

Duplicate the pictures, wrap in another wrapper and move it.
https://jsfiddle.net/09nj2c9f/