Update _main.scss

Author: vanruesc

manual/assets/css/src/screen/default/layout/_main.scss

@@ -25,8 +25,8 @@ main {
 	}
 	h1, h2, h3, h4, h5, h6 {
 		span + a {
-			padding: 0 1rem 0 0.25rem;
 			opacity: 0;
+			padding: 0 1rem 0 0.25rem;
 			text-decoration: none;
 			transition: color durations.$short, opacity durations.$short;
 			user-select: none;