<div class="container">

	<div class="folder">
		<div class="paper">
			<h1>Sample paper</h1>
	<p>Lorem ipsum dolor sit amets, 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.</p>
	<p>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.</p>
	<p>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.</p>
		</div>
		<div class="cover">
			<div class="title">Don't open</div>
		</div>
	</div>

</div>
<script type="text/javascript" src='http://libs.useso.com/js/jquery/1.11.1/jquery.min.js'></script>

*, *:before, *:after {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  background-color: #644812;
}

.container {
  position: relative;
  width: 100%;
  height: 100%;
}
.container > .folder {
  width: 220px;
  height: 180px;
  left: calc(50% - 110px);
  top: calc(70% - 90px);
  position: absolute;
}
.container > .folder > .cover {
  cursor: pointer;
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #fab62f;
  -moz-border-radius: 0 0 10px 10px;
  -webkit-border-radius: 0;
  border-radius: 0 0 10px 10px;
  -moz-box-shadow: 5px 5px rgba(0, 0, 0, 0.2);
  -webkit-box-shadow: 5px 5px rgba(0, 0, 0, 0.2);
  box-shadow: 5px 5px rgba(0, 0, 0, 0.2);
}
.container > .folder > .cover:before, .container > .folder > .cover:after {
  box-sizing: border-box;
  content: "";
  display: block;
  position: absolute;
  top: -100px;
  border: 50px solid transparent;
}
.container > .folder > .cover:before {
  left: 0;
  width: 50%;
  border-left: none;
  border-bottom-color: #fab62f;
}
.container > .folder > .cover:after {
  right: 0;
  width: 50%;
  border-right: none;
  border-bottom-color: #fab62f;
}
.container > .folder > .cover > .title {
  position: absolute;
  padding: 1em;
  font-family: Arial, Helvetica, sans-serif;
  text-transform: uppercase;
  font-weight: bold;
  text-align: center;
  font-size: 2.5em;
  color: rgba(0, 0, 0, 0.1);
  -moz-user-select: -moz-none;
  -ms-user-select: none;
  -webkit-user-select: none;
  user-select: none;
  -moz-transform: rotate(20deg);
  -ms-transform: rotate(20deg);
  -o-transform: rotate(20deg);
  -webkit-transform: rotate(20deg);
  transform: rotate(20deg);
}
.container > .folder > .paper {
  opacity: 1;
  position: absolute;
  overflow: hidden;
  width: 200px;
  height: 200px;
  top: calc(50% - 150px);
  left: calc(50% - 100px);
  transition: top 0.5s, opacity 0.4s;
  font-family: Verdana, Tahoma, sans-serif;
  font-size: 0.1em;
  padding: 1em;
  color: #644812;
  background-color: #fde1ab;
  -moz-box-shadow: 10px 10px rgba(0, 0, 0, 0.2);
  -webkit-box-shadow: 10px 10px rgba(0, 0, 0, 0.2);
  box-shadow: 10px 10px rgba(0, 0, 0, 0.2);
  -moz-border-radius: 5px;
  -webkit-border-radius: 5px;
  border-radius: 5px;
}
.container > .folder:hover > .paper {
  top: calc(50% - 200px);
}
.container > .folder.opened > .paper {
  top: calc(-500px);
  opacity: 0;
}