<!DOCTYPE html>
<meta charset="utf-8">
<title>Green Rectangle</title>
<style>
    div {
        width: 120px;
        height: 100px;
        background-color: green;
        background-clip: content-box;
        border-style: solid;
        border-width: 10px;
        border-color: transparent;
    }
</style>
<div></div>