JSFiddle - React, Tailwind, and code Playground

HTML

<div class="row1">
    ...
</div>

<div class="row2">
    ...
</div>

CSS

.row1 {
    background-color: red;
    width: 100%;
    height: 50%;
}
.row2 {
    background-color: pink;
    width: 100%;
    height: 50%;
}