nav {
	position: fixed;
	top: 0;
	left: 0;
	justify-content: space-between;
	transition: 0.6s;
	padding: 10px 20px;
	z-index: 600;
}

nav.onscroll {
	padding: 20px 40px;
	margin: 0px 0px;
	background: rgba(0, 0, 0, 0.5);
}

nav .logo {
	position: relative;
	font-weight: 700;
	color: #fff;
	text-decoration: none;
	font-size: 2em;
	text-transform: uppercase;
	letter-spacing: 2px;
}

nav.onscroll .logo,
nav.onscroll ul li a {
	color: #fff;
}