JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
    <div class="kid">1</div>
    <div class="kid">2</div>
    <div class="kid">3</div>
</div>

CSS

.parent{
    width:500px;
    height: 50px;
    background-color: red;
    
}
.kid{
    width: 200px;
    height: 20px;
     background-color: green;
    float:left;
    margin-left:4px;
    
}