<style>
body {
margin: 0;
background: #b5e0ba;
box-shadow: inset -200px -100px #5d3a3a;
}
</style>
<style>*{margin:0;background:#b5e0ba;box-shadow:inset -200px -100px #5d3a3a
<div></div>
<style>
body {
background: #5d3a3a;
margin: 0;
}
div {
width: 200px;
height: 200px;
background: #b5e0ba;
}
</style>
<p><style>*{background:#5d3a3a;margin:0}p{width:200;height:200;background:#b5e0ba