Update style.css

style.css

@@ -26,3 +26,12 @@ p {
 .card p:last-child {
 	margin-bottom: 0;
 }
+
+iframe {
+  width: 100%;
+  height: 100vh; /* 100% of the viewport height */
+  border: none;
+  position: absolute;
+  top: 0;
+  left: 0;
+}