<!DOCTYPE html>
<style>
* {
margin: 5px;
padding: 0;
border: 3px solid black;
}
.container {
display: flex;
position: relative;
width: 500px;
height: 500px;
}
.table {
display: table;
position: absolute;
background: green;
margin: auto;
}
.right {
top: 0;
bottom: 0;
right: 0;
width: 100px;
height: 150px;
}
.left {
top: 0;
bottom: 0;
width: 100px;
height: 150px;
}
.top {
left: 0;
right: 0;
width: 150px;
height: 100px;
}
.bottom {
bottom: 0;
left: 0;
right: 0;
width: 150px;
height: 100px;
}
</style>
<div class=container>
<div class="table left"></div>
<div class="table right"></div>
<div class="table top"></div>
<div class="table bottom"></div>
</div>
