body {
  font-family: "Noto Sans JP", sans-serif;
  font-family: "Nunito", sans-serif;
}
#bgVideo {
  position: absolute;
  left: 0;
  top: 0;
  background-size: cover;
  background: no-repeat left;
  user-select: none;
  pointer-events: none;
  filter: grayscale(0.9);
  opacity: 0.15;

  /*additional tweaks for positioning, read more in the link above*/
  /* height: 100vh; */
  /* width: 100vw; 100 * 16 / 9 */
}