JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <span></span>			
</div>

CSS

div {
    display: table;
    
    width: 100%;
    
    padding: 1px 0 0 1px;
    
	background: green;
    
	text-align: center;
    font-size: 0;
}

span {
	display: inline-block;
    
	width: 10%;
    
	max-width: 50px;
	min-width: 32px;
    
    margin: -1px 0 0 -1px;
    
	background: yellow;
    border: 1px solid #555;
    
    font-size: 16px;
    font-size: 1rem;
}

span:after {
    content: "";
    
    display: block;
    padding-top: 100%;
}