<!DOCTYPE HTML>
<style>
body {
    margin: 0;
}
div {
    width: 100px;
    height: 100px;
    padding: 20px;
    position: absolute;
    background-color: green;
    border-color: blue;
    border-style: solid;
    border-width: 20px;
}
</style>
<div id="target"></div>