JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container divinline">
    <div class="firstrow">
        <div class="col1 divinline">COLUME 1</div>
        <div class="col2 divinline">COLUME 2</div>
    </div>
    <div class="secondrow">ROW TWO</div>
</div>

CSS

.divinline{
    display:inline-block;
    text-align:center;
}

.container{
	height:80px;
	background:#ffee12;
	width:50%;
    text-align:left;
    color:#FFF;
    
}

.firstrow{
	background:#450011;
	height:60%;
    font-size: 0;
}

.secondrow{
	background:#333333;
	font-size:12px;
	height:40%;
}

.col1{
    background:#ffff00;
    height:100%;
    width:50%;
    font-size:12px;
}

.col2{
    background:#ff0000;
    height:100%;
    min-width:30%;
    font-size:12px;
}

JavaScript

$(document).ready(function(){
    var height = $('.firstrow').height();
    $('.divinline').css('line-height', height + 'px');
    
});