Untitled

dabblet.css

body
{
	background: pink;
}

.popup
{
	
	position: relative;
	
	width: 150px;
	height: 100px;
	padding: 10px;
	
	background: #fff;
	box-shadow: 0 0 0 1px rgba(0,0,0,0.3);
}

.tail
{
	position: absolute;
	left: 100%;
	top: 5px;
	
	overflow: hidden;
	
	width: 25px;
	height: 39px;
		
}

.tail:before
{
	position: absolute;
	top: 7px;
	left: -12px;
	
	width: 25px;
	height: 25px;
	
	transform: rotate(45deg);
	
	background: #fff;		
	box-shadow: 0 0 0 1px rgba(0,0,0,0.3);
	
	content: ''
}

.tail:after
{
	position: absolute;
	
	width: 1px;
	height: 100%;
	background: rgba(255,255,255,0.3);
	
	content: '';
}

dabblet.html

<div class="popup"><div class="tail"></div>content</div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"separate","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}