#block { 
  position: fixed;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
#block img {
  position:relative; 
  top: 0;
  left: -1000;
  height: 0px;
  width: 0px;
}
.graph {
  width:900px;
  height:auto;
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  content:url('../images/Graph1.png');
}
.graph:hover {
  content:url('../images/Graph2.png');
}
.graph .eye {
  position: relative;
  display: block;
}
.graph .eye::before {
  content: "";
  top: -550px;
  left: 495px;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 7px;
  border-radius: 50%;
  background: #274835;
  position: absolute;
  border: 2px solid #537d69;
  box-sizing: border-box;
}
/* Style the video: 100% width and height to cover the entire window */
.fullscreen {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 100vw;
  height: 100vh;
}
.twitter_box {
	width:150px;
	position:absolute;
	top:10px;
	left:10px;
	background:white;
	opacity:.8;
	margin:10px;
	z-index:100;
}
#back-to-top {
	bottom:20px;
	position:fixed;
	right:20px;
}
body{
  margin: 0px;
	background-color:white;
	font-family:"Helvetica; Neue",helvetica,arial,sans-serif;
}