JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css">
<div class="behind"></div><div class="front"><div class="slider"></div></div>
<div id="slider2" class="slider"></div>

CSS

.behind,.front{
    width:200px;
    height:100px;
    position:absolute;
    top:0;
    left:0;

}
.front{
    height:50px;
    top:25px;

}
.slider{
    width:100%;
    height:100%;
    background:grey;
}
#slider2{
    position:absolute;
    top:200px;
    width:100px;
    height:50px;

}