JSFiddle - React, Tailwind, and code Playground

HTML

<div class="c">
    <div class="c1">1</div>
    <div class="c2">2</div>
    
    
</div>

CSS

.c {
    position: relative;   
}

.c1 {
    position: absolute;
    height 50px;
    width: 30px;
    background: blue;
    z-index: 1;
}

.c2 {
    position: absolute;
    height 30px;
    width: 50px;
    background:red;
    z-index: 2;
}