JSFiddle - React, Tailwind, and code Playground

HTML

<div class="plane">
    <div class="win1">Lorem ipsum</div>
    <div class="win2">Dolor sit</div>
    <div class="win3">amet.</div>
</div>

<div class="plane">
    <div class="win1">Lorem ipsum</div>
    <div class="win2">Dolor sit</div>
    <div class="win3">amet.</div>
</div>

CSS

.plane { 
    background-color: #ccc; 
    border: solid 1px #cdcdcd; 
    margin-bottom: 15px; 
}

.plane > .win1 { background-color: #ddd; }
.plane > .win2 { background-color: #eee; }
.plane > .win3 { background-color: #fff; }

JavaScript

var allPlanes = $('.plane');

var baseHeight = 10;
$.map([1,2,3], function(i) {
   $(".plane > .win"+i).css("height", parseInt(baseHeight*i)+"px");
});