JSFiddle - React, Tailwind, and code Playground

by Alex

HTML

<div class="list">
    <div class="parent">
        <div class="label">1</div>
    </div>
    <div class="parent">
        <div class="label">2</div>
        <div class="list">
            <div class="parent">
                <div class="label">3</div>
            </div>
        </div>
    </div>
</div>

CSS

.list {
    display: flex;
}

.parent {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.label {
    background: #999;
    text-align: center;
}