JSFiddle - React, Tailwind, and code Playground

HTML

<div class="panel-body">
    <ul class="timeline">
        <li>
            <div class="timeline-panel">
                <div class="timeline-heading">
                     <h4 class="timeline-title">Timeline Event</h4>

                    <p> <small class="text-muted"><i class="fa fa-time"></i> 11 hours ago via Twitter</small>

                    </p>
                </div>
                <div class="timeline-body">
                    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin vel justo eu mi scelerisque vulputate. Aliquam in metus eu lectus aliquet egestas.</p>
                </div>
            </div>
        </li>
        <li class="timeline-inverted">
            <div class="timeline-panel">
                <div class="timeline-heading">
                     <h4 class="timeline-title">Timeline Event</h4>

                </div>
                <div class="timeline-body">
                    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin vel justo eu mi scelerisque vulputate. Aliquam in metus eu lectus aliquet egestas.</p>
                    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin vel justo eu mi scelerisque vulputate. Aliquam in metus eu lectus aliquet egestas.</p>
                </div>
            </div>
        </li>
        <li>
            <div class="timeline-panel">
                <div class="timeline-heading">
                     <h4 class="timeline-title">Timeline Event</h4>

                </div>
                <div class="timeline-body">
                    <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin vel justo eu mi scelerisque vulputate. Aliquam in metus eu lectus aliquet egestas.</p>
                </div>
            </div>
        </li>
    </ul>
</div>

CSS

.timeline-panel {
    background-color:red!important;
}
.timeline > li > .timeline-panel:after {
    border-left:14px solid red!important;
    border-right: 0 solid red!important;
}
.timeline > li.timeline-inverted > .timeline-panel:after {
    border-left:14px solid #fff!important;
    border-right-width: 14px!important;
    border-left-width: 0!important;
}
/************************/
 .timeline {
    position: relative;
    padding: 20px 0 20px;
    list-style: none;
}
.timeline:before {
    content:" ";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 3px;
    margin-left: -1.5px;
    background-color: #eeeeee;
}
.timeline > li {
    position: relative;
    margin-bottom: 20px;
}
.timeline > li:before, .timeline > li:after {
    content:" ";
    display: table;
}
.timeline > li:after {
    clear: both;
}
.timeline > li:before, .timeline > li:after {
    content:" ";
    display: table;
}
.timeline > li:after {
    clear: both;
}
.timeline > li > .timeline-panel {
    float: left;
    position: relative;
    width: 36%;
    padding: 20px;
    border: 1px solid #d4d4d4;
    border-radius: 2px;
    -webkit-box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.175);
}
.timeline > li > .timeline-panel:before {
    content:" ";
    display: inline-block;
    position: absolute;
    top: 26px;
    right: -15px;
    border-top: 15px solid transparent;
    border-right: 0 solid #ccc;
    border-bottom: 15px solid transparent;
    border-left: 15px solid #ccc;
}
.timeline > li > .timeline-panel:after {
    content:" ";
    display: inline-block;
    position: absolute;
    top: 27px;
    right: -14px;
    border-top: 14px solid transparent;
    border-right: 0 solid #fff;
    border-bottom: 14px solid transparent;
    border-left: 14px solid #fff;
}
.timeline > li > .timeline-badge {
    z-index: 100;
    position: absolute;
    top: 16px;
    left: 50%;
    width: 50px;
    height: 50px;
    margin-left:...