JSFiddle - React, Tailwind, and code Playground

HTML

<div id="images">
  123<img src="https://yt3.ggpht.com/-ly0A8oqWZjY/AAAAAAAAAAI/AAAAAAAAAAA/zLw3flqrG9c/s100-c-k-no/photo.jpg" alt="">
123  <img src="https://yt3.ggpht.com/-ly0A8oqWZjY/AAAAAAAAAAI/AAAAAAAAAAA/zLw3flqrG9c/s100-c-k-no/photo.jpg" alt="">
 123 <img src="https://yt3.ggpht.com/-ly0A8oqWZjY/AAAAAAAAAAI/AAAAAAAAAAA/zLw3flqrG9c/s100-c-k-no/photo.jpg" alt="">
 123 <img src="https://yt3.ggpht.com/-ly0A8oqWZjY/AAAAAAAAAAI/AAAAAAAAAAA/zLw3flqrG9c/s100-c-k-no/photo.jpg" alt="">
</div>

CSS

#images{
  position:relative;
  float:left;
}
#images:after{
  content:"";
  display:block;
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:#333;
  top:50%;
  margin-top:-3px;
  z-index:-1;
}
#images img{
  display:inline-block;
  width:50px;
  height:50px;
  border-radius:50%;
  margin-left:20px;
}
#images img:first-child{
  margin:0;
}