Vertical image infinity slider animation in React - css

Question

I want to make a vertical slider with pictures that works automatically. My problem is that when the animation is playing, the transition is very hard from the last picture to the first. I want to implement so that it is continuous like in the picture for example
Can this be done with just css? If not, then how to do it in React, I searched and didn't find useful information on how to implement it in React.
There are npm modules for React to do this? (swiper, elastic-carousel, react-image-gallery)
<div class="slider">
<ul class="slider__line">
<li class="slide__box"><img src='vp1.jpg' alt=""></li>
<li class="slide__box"><img src='vp2.jpg' alt=""></li>
<li class="slide__box"><img src='vp3.jpg' alt=""></li>
<li class="slide__box"><img src='vp4.jpg' alt=""></li>
<li class="slide__box"><img src='vp5.jpg' alt=""></li>
<li class="slide__box"><img src='vp6.jpg' alt=""></li>
</ul>
</div>
styles
.slider {
height: 500px;
overflow: hidden;
}
.slider__line {
list-style: none;
row-gap: 4px;
position: relative;
animation: sld 5s infinite;
transform: translateY(0%);
transition: all 0.5s ease;
}
.slide__box {
border-radius: 5px;
}
.slide__box img {
height: 100%;
height: 100%;
border-radius: 10px;
}
#keyframes sld {
from {
transform: translateY(0%);
}
to {
transform: translateY(-60%);
}
}
Thank you