JSFiddle - React, Tailwind, and code Playground

by stupid_genius

HTML

<div id="main">
	<div id="centered">
		<div id="center">&lt;---X---&gt;</div>
		<div id="left">Left</div>
		<div id="right">Right</div>
	</div>
</div>

CSS

html, body {
    margin: 0;
    padding: 0;
}

#main {
    position: absolute;
    width: 100%;
    height: 100%;
    background: lightblue;
}

#centered {
	position: relative;
    margin: 0 auto;
    width: 500px;
    background: yellow;
}

#center {
    margin: 0 auto;
    width: 100px;
    text-align: center;
    background: gray;
}

#left,
#right {
    position: absolute;
    top: 0;
}

#left {
    /* right: calc(50% + 50px); */
	left: 0;
    width: 50px;
    background-color: green;
}

#right {
    /* left: calc(50% + 50px); */
	right: 0;
    width: 200px;
    background-color: red;
}