JSFiddle - React, Tailwind, and code Playground

HTML

<div class="columns">
    <div class="post lastpost">text<br>text</div><div class="post">text<br>text<br>text<br>text</div><div class="post">text<br>text</div><div class="post">text<br>text</div><div class="post">text<br>text<br>text</div><div class="post">text<br>text</div><div class="post">text<br>text<br>text</div><div class="post">text<br>text</div><div class="post">text<br>text</div>
</div>

CSS

.columns {
    width: 100%;
}
.post {
    display: inline-block;
    margin: 0 1%;
    width: 23%;
    background-color: #ccc;
    margin-bottom: 15px;
    box-sizing:border-box;
    vertical-align: middle;
}
.lastpost {
    width: 48% !important;
}