JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
  <div class="item item1"></div>
  <div class="item item2"></div>
  <div class="item item2 item2-extra"></div>
</div>

CSS

.wrapper {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    width: 100%;
}
.item1 {
		background: red;
    height: 200px;
    margin-bottom: 4rem;
    order: 1;
    width: calc(50% - 6rem);
    margin: 0 3rem 0 0;
}
.item2 {
		background: blue;
    height: 100px;
    order: 2;
    width: calc(50% - 6rem);
}
.item2-extra {
    order: 3;
}