JSFiddle - React, Tailwind, and code Playground

HTML

<div class="centered">
<div class="container">
    <div class="child"></div>
    <div class="child"></div>
    <div class="child"></div>
</div>
</div>

CSS

.centered {
    text-align: center;
}
.container {
    background: red;
    padding: 10px;
    display: inline-block;
}
.child {
    width: 100px;
    height: 100px;
    float: left;
}
.child:nth-child(even) {
    background: green;
}
.child:nth-child(odd) {
    background: blue;
}