JSFiddle - React, Tailwind, and code Playground

HTML

<button id="changeWidthBtn">Change Width</button><br/>

<div class="container">
    <div style="float:left;width:100px;height:200px;" class="rec" id="one">one</div>
    <div style="overflow:hidden;height:50px;" class="rec">two</div>
    <div class="rec" style="overflow:hidden;height:150px;">three</div>
</div>

CSS

.rec{
    border:1px solid #249fea;
    margin:3px;
}
.container
{
    width:300px;
    height:300px;
    border:1px solid #ccc;
}

JavaScript

$("#changeWidthBtn").click(function(){
    $("#one").width("200px");
});