Remove dependency to lightbox2

src/styles/_lightbox.scss

@@ -2,7 +2,7 @@
 @use "fa/variables";
 @use "fa";
 
-@import '../../node_modules/lightbox2/src/css/lightbox.css';
+@use "lightbox/lightbox";
 
 @mixin lightbox-icon($icon) {
 	background: none;
@@ -146,7 +146,6 @@
 					}
 
 					&:hover a.lb-prev, &:hover a.lb-next {
-						filter: progid:DXImageTransform.Microsoft.Alpha(Opacity=100);
 						opacity: 1;
 					}
 				}