body, html {
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: #000;
}

#h {
  display: flex;
  background-image: url("heheheh.gif");
  background-repeat: no-repeat;
  background-size: 100% 100%;
  margin: 0;
  padding: 0;
  justify-content: center;
  align-items: center;
  height: 100%;
  width: 100%;
}

h1 {
  margin: 0;
  padding: 0;
  color: white;
  font-family: Arial;
  mix-blend-mode: difference;
}

body:active {
  filter: blur(10px);
}