<!doctype html> | |
<meta charset="utf-8"> | |
<title>Corner Clipped Background Color</title> | |
<style> | |
html { | |
background-color: green; | |
} | |
#a { | |
top: 20px; | |
left: 20px; | |
position: absolute; | |
width: 20px; | |
height: 20px; | |
background-color: black; | |
} | |
</style> | |
<div id="a"></div> |