JSFiddle - React, Tailwind, and code Playground

HTML

<div class="has-flex">
    <div class="flexed first">1</div>
    <div class="flexed">2</div>
    <div class="flexed">3</div>
    <div class="flexed">4</div>
    <div class="flexed last">5</div>
</div>

CSS

body {
    padding: 30px 0;
}

.has-flex {
    display: flex;
    width: 600px;
    margin: 0 auto;
    border: 1px solid #333;
    border-radius: 10px;
    padding: 20px;
}
.flexed {
    float: left;
    background: lightblue;
    color: #333;
    border-radius: 5px;
    padding: 5px;
    margin: 5px;
    text-align: center;
}