JSFiddle - React, Tailwind, and code Playground

HTML

<div class="roadmapstep">
    <div class="roadmapnumber">1</div>
    <h4>Header 1</h4>
    <div class="nextarrow"><img src="http://files.softicons.com/download/application-icons/elegant-icons-by-elegant-themes/png/48/Arrow-red.png"></div>
</div>

<div class="roadmapstep">
    <div class="roadmapnumber">2</div>
    <h4>Header 2</h4>
    <div class="nextarrow"><img src="http://files.softicons.com/download/application-icons/elegant-icons-by-elegant-themes/png/48/Arrow-red.png"></div>
</div>

CSS

.nextarrow {
    position: absolute;
    top: 65px;
    margin-right: -35px;
    right: 0;
    width: 65px;
    height: 40px;  z-index:1000;
   
}
.roadmapstep {
    width: 220px;
    height: 150px;
    border-left: 1px solid black;
    border-top: 1px solid black;
    border-bottom: 1px solid black;
    float: left;
    position: relative;   
}