JSFiddle - React, Tailwind, and code Playground

HTML

<div id="contenedor">
    <div class="left"></div>
    <div class="center"></div>
    <div class="right"></div>
</div>

CSS

#contenedor {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}
.left,
.right {
    width: 20%;
    height: 150px;
    background: green;
}
.center {
    width: 50%;
    height: 300px;
    background: pink;
}