Add videojs style to embedded videos

src/invidious/views/embed.ecr

@@ -14,6 +14,7 @@
 <script src="https://unpkg.com/silvermine-videojs-quality-selector@1.1.2/dist/js/silvermine-videojs-quality-selector.min.js"></script>
 <script src="https://unpkg.com/videojs-markers@1.0.1/dist/videojs-markers.min.js"></script>
 <script src="https://unpkg.com/videojs-share@1.1.0/dist/videojs-share.min.js"></script>
+<link rel="stylesheet" href="/css/default.css">
 <title><%= HTML.escape(video.title) %> - Invidious</title>
 </head>