JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="grid">
        <div class="block"></div><div class="block"></div><div class="block"></div><div class="block"></div><div class="block"></div><div class="block"></div></div>
</div>

CSS

.container {
    text-align: center;
}

.grid {
    overflow: auto;
    background-color: rgb(70, 121, 189);
    display: inline-block;
}

.block {
    background-color: #fff;
    float: left;
    margin: 5px;
    position: relative;
    height: 100px;
    width: 100px;
}