Use "light" instead of @else

content/tricks/index.md

@@ -159,7 +159,7 @@ Hate the skeuomorphic edge highlight on all semi-transparent elements? Let's get
 @import "../themes/duckquill/sass/_variables.scss";
 
 @include theme-variables using ($theme) {
-    @else {
+    @if $theme == "light" {
         --edge-highlight: 0 0 0 transparent;
     }
 }
@@ -192,7 +192,7 @@ Want to set some nice image as a background? We got you covered:
 @import "../themes/duckquill/sass/_variables.scss";
 
 @include theme-variables using ($theme) {
-    @if $theme =="dark" {
+    @if $theme == "dark" {
         --bg-color: linear-gradient(rgb(0 0 0 / 0.9), rgb(0 0 0 / 0.9));
     }
 

sass/_variables.scss

@@ -15,7 +15,7 @@
 }
 
 @include theme-variables using ($theme) {
-	@if $theme =="dark" {
+	@if $theme == "dark" {
 		// COLORS
 		--bg-color: color-mix(in srgb, var(--primary-color) 10%, black);
 		--fg-color: rgb(255 255 255);