<!DOCTYPE html>
<html lang="en">
<head>
<style>
div {
    width: 200px;
    height: 200px;
    background-color: green;
    -webkit-clip-path: polygon(10px 75px, 180px 180px, 100px 10px, 10px 180px, 180px 75px, 10px 75px);
}
</style>
</head>
<body>
<div>
</body>
</html>