Add @-moz-document preamble and fix hover effect

crunchyroll-dark.less

@@ -1,7 +1,14 @@
 @import "nord/src/lesscss/nord.less";
 
+@-moz-document domain('www.crunchyroll.com') {
+
 @orange: #f78c25;
 
+/* other popular shows hover */
+.landscape-grid .wrapper:hover {
+	background: @nord3;
+}
+
 /* buttons */
 #source_home .queue-to-top {
 	background: data-uri('img/queue_arrow_without-background.png') -3px 0 no-repeat;
@@ -102,3 +109,4 @@ body.main-page {
 .welcome-block h1, .welcome-title-list h1 {
 	border-bottom: 1px solid @nord1;
 }
+}