JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="block"></div>
    <div class="block"></div>
</div>

CSS

.container {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 300px;
    background-color: silver;
}

.block {
    position: relative;
    width: 50%; height: 200px;
    background-color: red;
    display: inline-block;
    float: left;
}