show speaking person fullscreen

Signed-off-by: Jan-Christoph Borchardt <hey@jancborchardt.net>

css/style.css

@@ -82,6 +82,7 @@
 	-webkit-flex: auto;
 	-ms-flex: auto;
 	flex: auto;
+	z-index: 2;
 }
 #videos .videoContainer {
     padding: 0 2%;
@@ -111,10 +112,13 @@ video {
 }
 .participants-2 .videoContainer,
 .videoContainer.speaking {
-	position: relative;
+	position: absolute;
 	width: 100%;
 	height: 100%;
 	overflow: hidden;
+	left: 0;
+	top: 0;
+	z-index: 1;
 }
 .participants-1 .videoView,
 .participants-2 .videoView {