JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">

    <div class="box1"></div>
    <div class="box2"></div>
    
</div>

CSS

.container
{
    text-align:left;
    background-color:blue;
}

.box1{
    width:100px;
    height:100px;
    display:inline-block;
    background-color:red;
}
.box2{
     width:100px;
    height:100px;
    display:inline-block;
    background-color:aqua;
}