HTML
CSS
JavaScript
<div class='container'><div class='box'></div></div>
.container { position: relative; width: 300px; height: 300px; background-color: lightgray; border: 2px solid black; } .box { position: absolute; inset: 20px; background-color: coral; border: 2px solid darkorange; }
// No JavaScript required for this demo