Update style.css

css/style.css

@@ -4,23 +4,15 @@ body {
   text-align: center;
 }
 
-.video-background {
-    background: #000;
-    position: fixed;
-    top: 0; right: 0; bottom: 0; left: 0;
-    z-index: -99;
-}
-.video-foreground,
-.video-background iframe {
-    position: absolute;
-    top: 0; left: 0;
-    width: 100%; height: 100%;
-    pointer-events: none;
-}
-#vidtop-content {
-    top: 0;
-}
-
 a:link, a:visited, a:hover, a:active {
   color: #000000;
 }
+
+video {
+  object-fit: cover;
+  width: 100vw;
+  height: 100vh;
+  position: fixed;
+  top: 0;
+  left: 0;
+}