body {
	background-color: lightgrey;
}
nav{
	margin-bottom: 2em;
}
ul {
	list-style-type:none;
	margin:0;
	padding:0;
	display:flex;
	flex-direction: row;
}
li { flex-grow: 1; }
a {
	display:block;
	padding:1em;
	background-color:whitesmoke ;
	text-align:center;
	margin-right:0.2em;
	text-decoration:none;
	color:#000000;
}
a:hover {background-color:lightskyblue;
color: green; }


article{ 
	
	width: 75%;
	float:left;

}


aside{
	
	width: 15%;
	display: inline-block;


}
footer{
	 clear: left;
        width: 100%;
        height: 50px;
        text-align: center;
        background-color:whitesmoke ;
}