<!DOCTYPE html>

<html>
<head>
    <style>
        .box {
            margin: 20px;
            height: 150px;
            width: 200px;
        }
    </style>
</head>
<body>

<div class="box">
    <svg width="100%" height="100%" viewBox="0 0 200 150">
		<clipPath id="clip1">
			<path d="M100,40l20,0 0,60 20,0 0,-20 -60,0 0,-20 80,0 0,60 -60,0 0,-80z"/>
		</clipPath>
		<rect x="50" y="30" width="350" height="100" fill="blue" clip-path="url(#clip1)"/>
    </svg>
</div>

<div class="evenodd box">
    <svg width="100%" height="100%" viewBox="0 0 200 150">
		<clipPath id="clip2">
			<path clip-rule="evenodd" d="M100,40l20,0 0,60 20,0 0,-20 -60,0 0,-20 80,0 0,60 -60,0 0,-80z"/>
		</clipPath>
		<rect x="50" y="30" width="350" height="100" fill="green" clip-path="url(#clip2)"/>
    </svg>
</div>

</body>
</html>