JSFiddle - React, Tailwind, and code Playground

HTML

<div class="box1">1
</div>
<div class="box2">2
</div>
<div class="box3">3
</div>
<div class="box4">4
</div>

CSS

div{
height:100px;
width:100px; 
border:solid 1px;
}

.box1{
position:relative;
left:500px;
background-color:#00d8ff;
z-index:3;
}

.box2{
position:relative;
left:570px;
top:-30px;
background-color:#f6ff00;
z-index: 3;
}
.box2:before{
content: '';
position: absolute;
bottom: -2px;
left: -2px;
width: 32px;
height: 30px;
box-shadow:1px -1px 0 black;
z-index: 14;
background-color: #ff69fa;
}
.box3{
position:relative;
left:500px;
top:-60px;
background-color:#ff69fa;
z-index:1;    
}

.box4{
position:relative;
left:430px;
top:-230px;
background-color:#24ff00;
z-index:2;
}