body {
    background-color: #ddd;
}

section {
	margin-top: 50px;
}

section header, section article {
    background-color: white;
    border-radius: 5px;
    padding: 10px;
    margin: 10px;
}

header h1 {
    font-size: xx-large;
}

nav {
    background-color: #333;
    text-align: center;
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    z-index: 10000;
}

nav ul {
    margin: 5px 0 5px 0;
}

nav li {
    display: inline-block;
    font-size: larger;
}

nav a {
    position: relative;
    display: inline-block;
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    padding: 5px;
    transition: background-color .2s ease-in-out;
}


nav ul li:before {
	content: '•';
	color: #aaa;
	margin: 0 5px 0 5px;
	display: inline-block;
}

nav ul li:first-child:before {
	content : '';
}

nav a:hover {
    background: #222;
}

nav a:active {
    background: #444;
}