changed rule to only change border-width

skatepark/assets/theme.css

@@ -289,7 +289,7 @@
 }
 
 .wp-block-separator.is-style-wide {
-	border-bottom: 3px solid currentColor;
+	border-width: 0 0 3px 0;
 }
 
 .pre-footer h3 {

skatepark/sass/blocks/_separator.scss

@@ -1,6 +1,6 @@
 
 .wp-block-separator {
 	&.is-style-wide {
-		border-bottom: 3px solid currentColor;
+		border-width: 0 0 3px 0;
 	}
 }