JSFiddle - React, Tailwind, and code Playground

by Ivanq

HTML

<div class="main">
    <div class="left-block">left</div>
    <div class="right-block">right</div>
</div>
<div class="bar">bar</div>

CSS

body, html {
    margin: 0px;
    height: 100%;
}
.main {
    box-sizing: border-box;
    border: 2px solid red;
    width: 80%;
    float: left;
    height: 100%;
}
.bar {
    box-sizing: border-box;
    border: 2px solid red;
    width: 20%;
    float: left;
    height: 100%;
}
.left-block {
    box-sizing: border-box;
    border: 2px solid magenta;
    width: 20%;
    float: left;
    height: 100%;
}
.right-block {
    box-sizing: border-box;
    border: 2px solid magenta;
    width: 80%;
    float: left;
    height: 100%;
}