JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
            <div id="cont1"></div>
            <div id="cont2"></div>
        </div>

CSS

*{
    border:none;
}
#wrapper{
    display:inline-block;
    background-color:#ccc;
    position:absolute;
    top:200px;
    left:300px;
   
    border:1px solid green;
    }
#cont1{
    position:relative;
    width:100px;
    height:50px;
    background-color:red;
}
#cont2{
    position:relative;
    width:50px;
    height:100px;
    margin-top:-50px;
    background-color:red;
}