<style>


body, html {

	height: 100%;
	width: 100%;
	
	margin: 0px;
	padding: 0px;
	
	}

iframe{

	border: 0;
	width: 100%;
	height: 750px;
	overflow: auto;


	
}

main {
	height: 80%;

	 

	display: -webkit-flex;
	display: 	 flex;
	flex-flow: row;
	
	}

 article {
	display: block;
	background: #cfc;

	flex: 3 1 60%;
	order: 2;
	
	}

 nav{

	background: #ccf;
	flex: 1 6 20%;
	order: 1;
	
	}

 aside {
	background: #ccf;
	flex: 1 6 20%;
	order: 3;

	}

header, footer {

	display: block;
	main-height: 10%;
	background: #fc6;

	}


ul{
	list-style-type: none;
	margin: 0px;
	padding: 0px;
	border-top-width: 1px;
	border-right-width: 1px;
	border-left-width: 1px;
	border-top-style: solid;
	border-right-style: solid;
	border-left-style: solid;
	border-top-color: #ccc;
	border-right-color: #ccc;
	border-left-color: #ccc;
   	
	}

a {
	font-family: arial, helvetica, sans-serif;
	color: #000;
	text-decoration: none;
	font-size: 0.9em;
	display: block;
	padding: 6px;
	border-bottom-width: 1px;
	border-bottom-style: solid;
	border-bottom-color: #ccc;
	background-color: #EAEAEA;
   
	}

a:hover {
	color: #FFF;
	background-color: #666;
	border-right-width: 5px;
	border-right-style: solid;
	border-right-color: #36f;
	
	}

</style>