inline-mask-overlay-image.html | Explore in Territory

<head>
<style>
.inlineTest {
	font-size:200px;
	 background-color:maroon;
         -webkit-mask-box-image: url(resources/mask.png) 75 75 75 75;
}
</style>
</head>
<body>
<span class="inlineTest">This content should be masked with a soft glow.</span>

chromium/third_party/blink/web_tests/fast/borders/inline-mask-overlay-image.html