JSFiddle - React, Tailwind, and code Playground

HTML

<div class="Row">
    <div class="Column">C1<br>asdasd</div>
    <div class="Column">C2</div>
    <div class="Column3">a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br>a<br>b<br></div>
</div>

CSS

.Row
{
    display: table;
    width: 100%;
    table-layout: fixed;
    border-spacing: 10px;
	height: 30%;
}
.Column
{
    display: table-cell;
    background-color: #0099ff;
}
.Column3
{
    display: table-cell;
    background-color: #0099ff;
	height: 30%;
	overflow: scroll;
}