diff --git a/css/21.css b/css/21.css
index b3214af..7195b34 100644
--- a/css/21.css
+++ b/css/21.css
@@ -201,4 +201,13 @@ h3:hover .headerlink {
 	.content h2 {
 		font-size: 1.8rem;
 	}
+}
+
+/* Video */
+.flex-vid {
+	height: 100%;
+}
+.flex-vid iframe {
+	width: 100%;
+	height: 100%;
 }
\ No newline at end of file