JSFiddle - React, Tailwind, and code Playground

HTML

<div class="clanek">
    <div class="item red">

        <h2><a href=""> Dlhy nadpis ktory sa nezmesti na jeden riadok preto ho stale este pisem</a></h2>
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cumque fugit amet eum beatae corporis fugiat facilis, minima praesentium aperiam itaque blanditiis error molestias quis quasi eaque ea quod obcaecati quisquam., minima praesentium aperiam itaque blanditiis error molestias quis quasi eaque ea quod obcaecati quisquam., minima praesentium aperiam itaque blanditiis error molestias quis quasi eaque ea quod obcaecati quisquam.</p>
    </div>
    <div class="item red">
        <h2><a href="">Erat aeque an has</a></h2>
        <p>Lorem ipsum dolor sit amet,.</p>
    </div>
    <div class="item red">
        <h2><a href="">Erat aeque an has blablablaba daco blabotam</a></h2>
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cumque fugit amet eum beatae corporis fugiat facilis</p>
    </div>
</div>
<div class="clear"></div>
<div class="clanek">
    <div class="item blue">
        <h2><a href="">Erat aeque an has</a></h2>
        <p>Lorem ipsum dolor sit amet,.</p>
    </div>
    <div class="item blue">
        <h2><a href=""> Dlhy nadpis ktory sa nezmesti na jeden riadok</a></h2>
        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Cumque fugit amet eum beatae corporis fugiat facilisima praesenperiam itaque blanditiis error molestias quis quasi eaque ea quod obcaecati quisquam.</p>
    </div>
    <div class="item blue">
        <h2><a href="">Erat aeque an has</a></h2>
        <p>Lorem ipsum dolor siatae corporis fugiat facilis</p>
    </div>
</div>

CSS

body {
    width: 610px;
}
.item {
    float: left;
    width: 200px;
    border: 1px solid black;
}
.red {
    background: red;
}
.blue {
    background: blue;
}
h2{
    background: yellow;
}
.clear{
    clear: both;
}

JavaScript

$(function () {
    $('.clanek').each(function () {
        var row = $(this);
        var items = row.find('.item h2');
        var height = 0;

        items.each(function () {
            var item = $(this);
            if (height < item.outerHeight()) {
                height = item.outerHeight();
            }
        });

        items.css({
            'height': height
        });

    })


});