Untitled

dabblet.css

body {
	margin: 0; 
}
* {	box-sizing: border-box;}

#wrapper {
	top: 100px;
	border: 1px solid green;
	overflow: hidden;
	margin-top: 40px;
}

#container{
	width: 100px;

}

#content {
	border: 1px solid green;
	height: 200px;
}

#map {
	position: fixed;
	background: yellow;
	top: 40px;
	bottom: 0; 
	left: 100px;
	right: 0px;

}

div.overflow {
    position: relative;
}

div.item {
    border: 1px solid red; 
    display: block; 
    height: 100px; 
    width: 90px; 
    position: absolute;
    top: 20px;     
    left: 50px;
    background: green;
    z-index: 2;
}

dabblet.html

<div id="map">
	asdfasdfasdfasdf
    </div>    
<div id="wrapper">
	
	<div id="container">
	   <div id="content">
		Lorem ipsum dolor sit amet, in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
    	<div class="overflow">
    		&lt;anchor&gt;
        <div class="item">foo</div>
    </div>        
</div>

dabblet.js

document.getElementById("wrapper").scrollTop=200;

settings.json

{"view":"separate","fontsize":"70","seethrough":"","prefixfree":"1","page":"all"}