JSFiddle - React, Tailwind, and code Playground

HTML

<div id="galerie">
		<div id="stanga">
		</div>
</div>

CSS

#galerie {
	margin-top: 5%;
	width: 974px;
	height: 500px;
	margin-left:auto;
	margin-right:auto;
	background-color:yellow;
}

#stanga {
	width: 50px;
	height: 50px;
	background-color: red;
	margin-top:200px;
	margin-left: 0px;
}