html, body {
  position: relative;
  margin: 0;
  height: 1500px;
}

.vimeo-wrapper {
   position: fixed;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   z-index: -1;
   pointer-events: none;
   overflow: hidden;
}
.vimeo-wrapper iframe {
   width: 100vw;
   height: 56.25vw; /* Given a 16:9 aspect ratio, 9/16*100 = 56.25 */
   min-height: 100vh;
   min-width: 177.77vh; /* Given a 16:9 aspect ratio, 16/9*100 = 177.77 */
   position: absolute;
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
}

#image {
  width: 100%;
  height: 150vh;
  min-height: 500px;
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  background-size: 100% auto;
  background-repeat: no-repeat;
  background-position: top center;
  background-image: url(img/jungle_viewport.png);

}