JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box">
    <ul>
        <li><span class="line"></span><img src="http://t2.gstatic.com/images?q=tbn:ANd9GcSZ3KCafAVUhanaeaAsG0Q8lzdKKMOo7TP3H1W4TcMEcpVqtKTPVA&t=1" /></li>
        <li ><span class="line"></span><img src="http://t2.gstatic.com/images?q=tbn:ANd9GcSZ3KCafAVUhanaeaAsG0Q8lzdKKMOo7TP3H1W4TcMEcpVqtKTPVA&t=1" /></li>
        <li><span class="line"></span><img src="http://t2.gstatic.com/images?q=tbn:ANd9GcSZ3KCafAVUhanaeaAsG0Q8lzdKKMOo7TP3H1W4TcMEcpVqtKTPVA&t=1" /></li>
        <li><span class="line"></span><img src="http://t2.gstatic.com/images?q=tbn:ANd9GcSZ3KCafAVUhanaeaAsG0Q8lzdKKMOo7TP3H1W4TcMEcpVqtKTPVA&t=1" /></li>
        <li><span class="line"></span><img src="http://t2.gstatic.com/images?q=tbn:ANd9GcSZ3KCafAVUhanaeaAsG0Q8lzdKKMOo7TP3H1W4TcMEcpVqtKTPVA&t=1" /></li>
        <li><span class="line"></span><img src="http://t2.gstatic.com/images?q=tbn:ANd9GcSZ3KCafAVUhanaeaAsG0Q8lzdKKMOo7TP3H1W4TcMEcpVqtKTPVA&t=1" /></li>
    </ul>
</div>

CSS

.box {
    width:662px;
    margin:0 auto;
    
}

.box li {
   display: flex;
  align-content: center;
  flex-wrap: wrap;
  flex-direction:column;
  
}

img{
  height: 100px;
  width:100px;
  border-radius: 50%;
}

.line {
     border-left: 6px solid green;
     height: 100px;
}