Fix navbar mods having broken border radius

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased](https://codeberg.org/daudix/duckquill/compare/v5.4.0...main)
 
+### Fixed
+
+- Fix navbar mods having broken border radius.
+
 ## [5.4.0](https://codeberg.org/daudix/duckquill/compare/v5.3.2...v5.4.0)
 
 ### Added

sass/mods/_classic-nav.scss

@@ -1,11 +1,15 @@
 #site-nav {
 	margin-block-start: 0;
 	inset-block-start: 0;
-	box-shadow: var(--shadow-glass);
 	border-radius: 0;
 	width: 100%;
 	max-width: 100%;
 
+	&::before {
+		box-shadow: var(--shadow-glass);
+		border-radius: 0;
+	}
+
 	nav,
 	#search-container {
 		margin: 0 auto;

sass/mods/_no-edge-highlight.scss

@@ -2,6 +2,6 @@
 
 @include theme-variables using ($theme) {
     @if $theme == "light" {
-        --edge-highlight: 0 0 0 transparent;
+        --edge-highlight: 0 0 transparent;
     }
 }

sass/mods/_sticked-nav.scss

@@ -1,9 +1,13 @@
 #site-nav {
 	margin-block-start: 0;
 	inset-block-start: 0;
-	box-shadow: var(--shadow-glass);
 	border-radius: 0 0 calc(var(--rounded-corner) + 0.5rem) calc(var(--rounded-corner) + 0.5rem);
 
+	&::before {
+		box-shadow: var(--shadow-glass);
+		border-radius: 0 0 calc(var(--rounded-corner) + 0.5rem) calc(var(--rounded-corner) + 0.5rem);
+	}
+
 	nav ul li {
 		a,
 		summary,