body{background-color:gainsboro; font-size:100%;
}
article article article {float:left; width:67%;height:20%;
}

article article section {float:left;width:67%;height:80%
}

article article aside {float:right;width:33%;height:100%
}
article nav {
}
nav a {display:inline-block; position:relative;width:19.76%; text-align:center;font-size:1.5em;
}
nav a:link{ text-decoration:none;background-color:black;color:white;
}
nav a:active {background-color:snow;color:indigo;
}
    nav a:hover {background-color:white;text-align:center;color:black;
    }
    nav a:visited {color:white;background-color:black;
    }