*{
	margin: 0;
	padding: 0;
}

body{
	font-family: sans-serif;
}
nav{
	padding: 10px;	
	background: rgba(244, 246, 248, 0.6);
	border-right: 1px solid lightgray;
	width: 180px;
	left: 0;
	position: fixed;
	height: 100%;
}

nav button{
	padding: 9px;
	margin: auto;
	margin-top: 4px;
	width: 100%;
	text-align: left;
	border-radius: 10px;
	border: 1px solid lightgray;
	background: transparent;
	border: none;
	font-size: 14px;
	font-family: sans-serif;
}
nav button:hover{
	background: #EEEEEE;

}


.main{
	margin-left: 201px;
	position: fixed;
	width: 86.9%;
	height: 100%;
}
iframe{
	position:absolute;
	margin-right: 400px;
	overflow: auto;
	width:100%; 
	height: 100%;  
	margin:0; 
	padding:0; 
	z-index:-1;
	border: none;
}

nav label{
	font-size: 14.5px;
	font-weight: bold;
	color: dimgray;
}