Refactor Astro components and layouts

src/scss/_navbar.scss

@@ -1,41 +0,0 @@
-header {
-	background-color: $colorBg;
-	border-bottom: 1px solid $colorHeader;
-	box-shadow: 0 5px 5px $colorBg;
-	left: 0;
-	line-height: 3.5em;
-	opacity: 0.975;
-	position: fixed;
-	right: 0;
-	top: 0;
-}
-
-nav {
-	margin: auto;
-	max-width: 60em;
-	padding: 0 4em;
-	text-align: right;
-
-	a {
-		color: $colorText;
-		padding: 0 1em;
-
-		&:visited {
-			color: $colorText;
-		}
-	}
-}
-
-@media (width <=684px) {
-	header {
-		box-shadow: none;
-	}
-
-	nav {
-		padding: 0 2em;
-
-		span {
-			display: none;
-		}
-	}
-}

src/scss/global.scss

@@ -1,7 +1,3 @@
-// Base
 @import "variables";
 @import "framework";
 @import "print";
-
-// Modules
-@import "navbar";