JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="d1">No</div>
    <div class="d2">Some possible long content</div>
    <div class="d3">Not so long stuff</div>
</div>

CSS

.container {
    border: 1px solid black;
    position: relative;
}

.d1 {
    background-color: #cff;
    height: 100%;
    position: absolute;
    width: 3em;
}
.d2, .d3 {
    margin-left: 3em;
}
.d2 {
    background-color: #fcf;
}
.d3 {
    background-color: #ffc;
}