JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-1.11.3.js"></script>
<div class="container">
    <div class="row">
        <div class="col-md-12 text-center" style="margin-bottom:50px">
            <h4 class="uppercase mb16">Something</h4> </div>
    </div>
    <div class="row">
        <div class="col-md-12 text-center">
            <div class="post-snippet mb64" style="margin-bottom:0px">
                <div style="text-align:justify">
                    <p>one</p>
                </div>
                <hr/>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-12 text-center">
            <div class="post-snippet mb64" style="margin-bottom:0px">
                <div style="text-align:justify">
                    <p>two</p>
                </div>
                <hr/>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-12 text-center">
            <div class="post-snippet mb64" style="margin-bottom:0px">
                <div style="text-align:justify">
                    <p>three</p>
                </div>
                <hr/>
            </div>
        </div>
    </div>
</div>

JavaScript

$( ".container hr:last-child" ).css({ display:"none"});