JSFiddle - React, Tailwind, and code Playground

by borayeris

HTML

<div class="wrap">
    <div class="col a">a</div>
    <div class="col b">b</div>
</div>

CSS

body {
    margin: 0;
}
.wrap { 
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 9px;
    background-color: red;
}
.a {
    background-color: blue;
}
.b {
    background-color: yellow;
}