Overflow Shadow

dabblet.css

/**
 * Overflow Shadow
 */

html {
	min-height: 100%;
	background: white;
}

div {
	width: 200px;
	margin: 20px auto;
	height: 300px;
	overflow-y: scroll;
	padding: 10px 0 5px 0;
	background: linear-gradient(white, white 70%), linear-gradient(white, white) bottom, radial-gradient(at 50% 0, rgba(0,0,0,0.2), transparent 70%), radial-gradient(at 50% 100%, rgba(0,0,0,0.2), transparent 70%) bottom;
	background-size: 100% 15px;
	background-repeat: no-repeat;
	background-attachment: local, local, scroll, scroll;
}

dabblet.html

<div>
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.
</div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"css"}