html, body {height: 100%; margin: 0;}
body { background: #141414;}
#vid-bg {
  position: fixed;
  right: 0;
  bottom: 0;
  min-width: 100%;
  min-height: 100%;
  opacity: 0.25;
}
#logo {	width: 120px; height: 120px; position: absolute; left: 0; right: 0; top: 0; bottom: 0; margin: auto; }
#logo img { width: 100%; }