JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wall">
    <div class="postDiv">
        <div class="container">
            <div class="leftFloat">
                <div data-post-id="91" class="post" id="">
                    <img src="/images/male_profile.png" class="postImg">
                    <div class="formatted-text">
                         <h4>roberto mansion</h4> 
                         <h5>tryewklekwleklweklwkelkweklweklweklwkelwkelkwelkwlekwlekwlekwelkwelkwelwkelkwelkwelkwlekwleklweklwkelweklwkelwkelwkelwkelweklwkewleklwkelwkelwekwe</h5>

                         <h6>today - <span>about 10 minutes ago</span></h6><a style="font-size:11px;" class="cancelPost">cancel</a>

                    </div>
                </div>
                <div data-post-id="90" class="post" id="">
                    <img src="/images/male_profile.png" class="posting">
                    <div class="formatted-text">
                         <h4>roberto mansion</h4>

                         <h5>try</h5>

                         <h6>today - <span>about 10 minutes ago</span></h6><a style="font-size:11px;" class="cancelPost">cancel</a>

                    </div>
                </div>
            </div>
            <div class="rightFloat">
                <div data-post-id="89" class="post" id="">
                    <img src="/images/male_profile.png" class="posting">
                    <div class="formatted-text">
                         <h4>roberto mansion</h4>

                         <h5>try</h5>

                         <h6>today - <span>about 10 minutes ago</span></h6><a style="font-size:11px;" class="cancelPost">cancel</a>

                    </div>
                </div>
                <div data-post-id="88" class="post" id="">
                    <img src="/images/male_profile.png" class="posting">
                    <div class="formatted-text">
                         <h4>roberto mansion</h4>

                         <h5>try</h5>

                         <h6>today - <span>about 10...

CSS

.wall {
    margin-top: 20px;
    width: 100%;
    height: 100%;
}
.post {
    background-color: lime;
    z-index: 2;
    padding:20px 20px 20px 20px;
    margin: 20px 10px 0px 10px;
    background-color: #edeff4;
    border: 1px solid rgb(216, 216, 216);
    box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.1);
    -moz-box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.1);
    -webkit-box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.1);
}
.leftFloat {
    float: left;
    clear: left;
    width: 50%;
    display: block;
    position: relative;
}
.rightFloat {
    float: right;
    clear: right;
    width: 50%;
    display: block;
    position: relative;
}
.container {
    margin-left:auto;
margin-right:auto;
    width: 100%;
    
}
.formatted-text {
    margin-left:80px;
    word-wrap: break-word;
    /* or "normal" */
    overflow-wrap: break-word;
}