JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
    <div class="item"></div>
</div>

CSS

#container {
//    column-count: 3;
//    -moz-column-count: 3;
//    -webkit-column-count: 3;
    width: 100%;
    display:inline-table;
}
.item {
    background: red;
    height: 100px;
    box-sizing: border-box;
    width: 33%;
    padding-right: 10px;
    background-clip: content-box;
    float:left;
    margin-bottom: 20px;
}