.citation{
	 list-style-type: none;
	 text-indent: -20px;
}
.citation li{
	padding: 10px;
}
.notShown{
	display:none;
}
.container{
	background: #d9d9d9;
}
h1{
	text-align:center;
}

#button{
	text-align:center;
}
/*back to top*/
#myBtn {
  display: none;
  position: fixed;
  bottom: 20px;
  right: 30px;
  z-index: 99;
  font-size: 18px;
  border: none;
  outline: none;
  background-color:rgb(0,0,0,0.3);
  color: white;
  cursor: pointer;
  padding: 2px 15px;
  border-radius: 15px;
}

#myBtn:hover {
  background-color: rgb(0,0,0,0.8);
}

#showBtn{
	border: none;
	outline: none;
	background-color:rgb(0,0,0,0.3);
	color: white;
	cursor: pointer;
	padding: 2px 15px;
	border-radius: 15px;
}

#showBtn:hover {
  background-color: rgb(0,0,0,0.8);
}