JSFiddle - React, Tailwind, and code Playground

HTML

<aside class="aside"> 
            <div class="aside__item">Lorem ipsum dolor sit amet, consectetur adipiscing elit.
                Aenean luctus pulvinar risus ut congue. Duis eu metus eros.
            </div>
            <div class="aside__item">Lorem ipsum dolor sit amet, consectetur adipiscing elit.
                Aenean luctus pulvinar risus ut congue. Duis eu metus eros.</div>
            <div class="aside__item">Lorem ipsum dolor sit amet, consectetur adipiscing elit.
                Aenean luctus pulvinar risus ut congue. Duis eu metus eros.</div>

        </aside>

CSS

.aside__item {
    background-color: green;
    margin: 10px;
    color: white;
    width: calc(50% - 20px);
    margin: 10px;
    min-height: 200px;
    padding: 50px;
 }
.aside {
    display: flex;
    flex-flow: row wrap;
    width: 100%;
}
* {
    padding: 0;
    box-sizing: border-box;
 }