Fix lightbox prev/next buttons

style/_lightbox.scss

@@ -105,14 +105,15 @@
 				box-sizing: content-box;
 			}
 			&.lb-video-nav .lb-nav {
-				top: 45px;
-				height: calc(100% - 90px);
+				top: 0;
+				height: calc(100% - 100px); //Leave space for video progress bar
 			}
 			
 			.lb-nav {
 				a.lb-prev, a.lb-next {
 					color: white;
 					text-decoration: none;
+					text-shadow: 0px 1px 1px rgba(0,0,0,0.8);
 					
 					&:before {
 						position: absolute;