video {
  object-fit: cover;
  width: 100vw;
  height: 100vh;
  position: fixed;
  top: 0;
  left: 0;
  background: none;
  background-color: transparent;
}

html, body {
  height: 100%;
}
html {
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 150%;
  line-height: 1.4;
}
body {
  margin: 0;
  background: url('poster.jpg');
  background-size: cover;    
    
}

.viewport-header {
  position: relative;
  height: 100vh;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

h1 {
  font-family: 'Montserrat', sans-serif;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 2.5vw;
  line-height: 1.2;
  font-size: 4vw;
  text-align: center;
  font-weight: 700;
}

h1 span {
    display: block;
    font-size: 10vw;
    letter-spacing: -1.3vw;
  }