.nav-container {
    background-color:black;
    width:100%;
    position:fixed;
    left:0
}

nav {
    text-align:center;
    width:840px;
    margin:0 auto
}

nav ul {
	padding: 0;
	margin: 1.2em;
}

nav li {
    width:24%;
    display:inline-block
}

nav li a {
    font-size:20px;
    color:#fff
}

nav li a.active {
    color:#aaa
}



@media screen and (max-width: 768px) {
.nav-container {
	background-color: black;
	width: 100%;
	position: fixed;
	left: 0;
	
}
nav {
    width:90%
}

nav li {
	width: 22%;
	line-height: 0.9em;
}

nav li a {
    font-size:17px
}

section .content {
    width:90%
}
nav ul {
	padding: 0;
	margin-top: 5px;
	margin-right: 5px;
	margin-bottom: 5px;
	margin-left: 5px;
}
}