main.css

* {
        margin: 0;
        padding: 0;
}

body {
        background-color: #001722;
}

#logo {
        background-image: url( images/logo.png );
        background-size: contain;
        background-repeat: no-repeat;
        background-position: top center;
        width: 100%;
        height: 90px;
        margin-top: 36px;
}

.nav {
	font-family: "fira-sans", sans-serif;
	text-align: center;
	margin-top: 16px;
	margin-left: 20%;
	margin-right: 20%;
	border-bottom: 3px solid #3F5058;
	padding-bottom: 28px;
}

.nav a {
	list-style-image: none;
	font-size: 18px;
	text-decoration: none;
	color: #fff;
	margin-left: 12px;
	margin-right: 12px;
	transition: all .25s ease-in-out;
}

.nav a.selected,
.nav a:hover {
	color: #FFCF0B;
}

.footer,
.footer a {
        text-align: center;
		text-decoration: none;
        font-family: "fira-sans", sans-serif;
        color: #3F5058;
}

.footer {
        font-size: 12px;
		margin-top: 24px;
        margin-left: 20%;
        margin-right: 20%;
        border-top: 1px solid #3F5058;
        padding-top: 16px;
		padding-bottom: 8px;
}

.footer a {
		font-size: 24px;
		padding: 4px;
		transition: all .25s ease-in-out;
}

.footer a:hover {
	color: #FFCF0B;
}

@media only screen and (max-device-width: 600px) {
	#logo {
		margin-left: 5%;
		margin-right: 5%;
		width: 90%;
	}
	
	.nav,
	.footer {
		margin-left: 5%;
                margin-right: 5%;
	}
	
	.nav a {
		line-height: 2.75em;
	}
	
	.footer a {
		font-size: 36px;
	}
}