JSFiddle - React, Tailwind, and code Playground

HTML

<div class="block">шла маша</div>
<div class="block">по шоссе и сосала</div>
<div class="block">сушку</div>

CSS

.block
{
    width:100px;
    border:5px solid #000;
    float:left;
    margin:20px;
}

JavaScript

var i=0;
$('.block').each(function()
{
    var h=$(this).height();
    if(h>i)i=h;
});
$('.block').height(i);