JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <div class="post"></div>
    <div class="post1"></div>
    
    <p>Hello</p>
    
</div>

CSS

#wrapper {
    
    height: 40px;
}

.post {
    width: 150px;
    height: 40px;
    background: red;
    margin: 10px;
    position:absolute;
    top:50px;
    left:40px}
    
    
.post1 {
    width: 150px;
    height: 40px;
    background: green;
    margin: 10px;
    position:absolute;
    top:70px;
    left:60px}

JavaScript

var redBox = $(".post");
var greenBox = $(".post1");
  
var offset = redBox.offset()left;

$(".post1").css({'left': '+offset.left()+'});