#header {
 	background-color: white;
	text-align: center;
}
/* Style the navigation menu */
#nav{
	-webkit-flex: 1;
    -ms-flex: 1;
    flex: 1;
 	background-color: white;
}
/* Style the list inside the menu */
nav ul {
  list-style-type: none;
  padding: 0;
}
/* Style the content */
#article{
	-webkit-flex: 3;
    -ms-flex: 3;
    flex: 3;
	background-color: white;
}
/* Style the footer */
#footer {
	background-color: white;
}

body {
	background-color: grey;
}